sábado, 3 de diciembre de 2011

Calculadora con programación híbrida: Visual C++ y ensamblador


#pragma once

namespace calculator {

       using namespace System;
       using namespace System::ComponentModel;
       using namespace System::Collections;
       using namespace System::Windows::Forms;
       using namespace System::Data;
       using namespace System::Drawing;

       //método operacion para sumar, restar y multiplicar.
       //Recibe ca (cantidad a), cb (cantidad b) y nop (numero de operación)
       int operacion(int ca,int cb,int nop)
                     {
                            //variable para almacenar el resultado
                            int resultado=0;
                            // si nop (numro de operacion es igual a 1 realizara la suma
                            if(nop==1)
                            {
                                   //inicio de bloque de código en ensamblador
                         _asm{
                                  //transfiere al registro ax extendido ca (cantidad a)
                                  mov eax,ca
                                  //suma al registro ax extendido cb (cantidad b)
                                  add eax,cb
                                  //transfiere a resultado el valor del registro ax extendido
                                        mov resultado,eax
                                   }
                            //fin de bloque de código en ensamblador
                            //retorna resultado
                             return resultado;
                           }
                            // si nop número de operación es iguala 2 realizará la resta
                            else if(nop==2)
                            {
                                   //inicio de bloque de código en ensamblador
                         _asm{
                                  //transfiere al registro ax extendido ca (cantidad a)
                                  mov eax,ca
                                  //resta al registro ax extendido cb (cantidad b)
                                  sub eax,cb
                                  //transfiere a resultado el valor del registro ax extendido
                                  mov resultado,eax
                                   }
                            //fin de bloque de código en ensamblador
                            //retorna resultado
                             return resultado;
                            }
                            // si nop (número de operación) es igual a 3 tres realizará la multiplicación
                           else if(nop==3)
                            {
                                   //inicia bloque de código ensamblador
                           _asm{
                                  //agrega a la pila el registro ax extendido
                                  push eax
                               //agrega a la pila el registro cx extendido
                                  push ecx
                                  //transfiere al registro cx extendido ca (cantidad a)
                                  mov ecx,ca
                                  //transfiere al registro ax extendido 0h
                                  mov eax,0h
                                  //transfiere al registro ax extendido cb (cantidad b)
                                  mov eax,cb
                                  //multiplica el registro cx extendido por el registro
                                  //ax entendido y almacena el resultado en el registro
                                  //ax extendido
                                  mul ecx
                                  //transfiere a resultado el registro ax extendido    
                                  mov resultado,eax
                                  //extrae de la pila el registro cx extendido
                                  pop ecx
                                  //extrae de la pila el registro ex extendido
                                  pop eax
                           }
                           //fin de bloque de código en ensamblador
                           //retorna resultado
                           return resultado;
                           }
                            //si nop(número de operación es 4 entonces
                            //realizará la división
                    else if(nop==4)
                            {
                                   //se declaran dos variables de tipo entero
                                   //llamadas n1 y n2
                                  int n1=0,n2=0;
                                  //inicia bloque de codigo ensamblador donde realizará
                                  //solo transferencias entre los registros pues la operación
                                  //div de ensamblador produce resultados que no pudimos convertir a
                                  //los resultados correctos de la división
                           _asm{
                                  //transferimos a los registros ax y dx extendidos el valor de 0000h
                                  mov eax,0000h
                                  mov edx,0000h
                                  //transferimos al registro dx extendido ca(cantidad a)
                                  mov edx,ca
                                  //transferimos al registro ax extendido cb(cantidad b)
                                  mov eax,cb
                                  //transferimos a la variable n1 el valor del  registro dx extendido
                                  mov n1,edx
                                  //transferimos a la variable n2 el valor del  registro ax extendido
                                  mov n2,eax
                           }
                           //fin del bloque de código en ensamblador
                           //resultado es igual a n1 dividido entre n2
                           resultado=n1/n2;
                           //retornamos el valor de resultado
                           return resultado;
                           }

       }

      
       /// <summary>
       /// Resumen de Form1
       /// </summary>
       public ref class Form1 : public System::Windows::Forms::Form
       {
       public:
       //declaramos variables globales de tipo entero
             //cant1(cantidad1),cant2(cantidad2),salida(resultado de la operación),
             //numcant(número de cantidad),numoper(número de operación)
             int cant1,cant2,salida,numcant,numoper;
//declaramos variables globales de tipo String
             // a(cantidad a), b(cantidad b),operador(para indicar la operación)
             String ^ a;
             String ^ b;
             String ^ operador;
             String ^ igual;
      
                     
             Form1(void)
             {
                    InitializeComponent();
                    //
                    //TODO: agregar código de constructor aquí
                    //
                    //inicialización de la variables globales
              cant1=0;
              cant2=0;
              salida=0;
              numcant=0;
              numoper=0;
              a = "";
              b = "";
              operador="";
              igual="=";
             }

       protected:
             /// <summary>
             /// Limpiar los recursos que se estén utilizando.
             /// </summary>
             ~Form1()
             {
                    if (components)
                    {
                           delete components;
                    }
             }
       private: System::Windows::Forms::Button^  btnclear;
       protected:
       private: System::Windows::Forms::TextBox^  txtdatos;
       private: System::Windows::Forms::Button^  btnigual;
       private: System::Windows::Forms::Button^  btndiv;
       private: System::Windows::Forms::Button^  btnres;
       private: System::Windows::Forms::Button^  btnsum;
       private: System::Windows::Forms::Button^  btnmul;
       private: System::Windows::Forms::Button^  btn1;
       private: System::Windows::Forms::Button^  btn3;
       private: System::Windows::Forms::Button^  btn4;
       private: System::Windows::Forms::Button^  btn7;
       private: System::Windows::Forms::Button^  btn5;
       private: System::Windows::Forms::Button^  btn8;
       private: System::Windows::Forms::Button^  btn9;
       private: System::Windows::Forms::Button^  btn6;
       private: System::Windows::Forms::Button^  btn0;
       private: System::Windows::Forms::Button^  btn2;
       private: System::Windows::Forms::GroupBox^  groupBox1;
       //public:
       private: System::Windows::Forms::GroupBox^  groupBox2;
       private:
             /// <summary>
             /// Variable del diseñador requerida.
             /// </summary>
             System::ComponentModel::Container ^components;

#pragma region Windows Form Designer generated code
             /// <summary>
             /// Método necesario para admitir el Diseñador. No se puede modificar
             /// el contenido del método con el editor de código.
             /// </summary>
             void InitializeComponent(void)
             {
                    this->btnclear = (gcnew System::Windows::Forms::Button());
                    this->txtdatos = (gcnew System::Windows::Forms::TextBox());
                    this->btnigual = (gcnew System::Windows::Forms::Button());
                    this->btndiv = (gcnew System::Windows::Forms::Button());
                    this->btnres = (gcnew System::Windows::Forms::Button());
                    this->btnsum = (gcnew System::Windows::Forms::Button());
                    this->btnmul = (gcnew System::Windows::Forms::Button());
                    this->btn1 = (gcnew System::Windows::Forms::Button());
                    this->btn3 = (gcnew System::Windows::Forms::Button());
                    this->btn4 = (gcnew System::Windows::Forms::Button());
                    this->btn7 = (gcnew System::Windows::Forms::Button());
                    this->btn5 = (gcnew System::Windows::Forms::Button());
                    this->btn8 = (gcnew System::Windows::Forms::Button());
                    this->btn9 = (gcnew System::Windows::Forms::Button());
                    this->btn6 = (gcnew System::Windows::Forms::Button());
                    this->btn0 = (gcnew System::Windows::Forms::Button());
                    this->btn2 = (gcnew System::Windows::Forms::Button());
                    this->groupBox1 = (gcnew System::Windows::Forms::GroupBox());
                    this->groupBox2 = (gcnew System::Windows::Forms::GroupBox());
                    this->groupBox1->SuspendLayout();
                    this->groupBox2->SuspendLayout();
                    this->SuspendLayout();
                    //
                    // btnclear
                    //
                    this->btnclear->Font = (gcnew System::Drawing::Font(L"Arial Black", 12, System::Drawing::FontStyle::Bold, System::Drawing::GraphicsUnit::Point,
                           static_cast<System::Byte>(0)));
                    this->btnclear->Location = System::Drawing::Point(47, 155);
                    this->btnclear->Name = L"btnclear";
                    this->btnclear->Size = System::Drawing::Size(37, 37);
                    this->btnclear->TabIndex = 34;
                    this->btnclear->Text = L"C";
                    this->btnclear->UseVisualStyleBackColor = true;
                    this->btnclear->Click += gcnew System::EventHandler(this, &Form1::btnclear_Click);
                    //
                    // txtdatos
                    //
                    this->txtdatos->Location = System::Drawing::Point(18, 15);
                    this->txtdatos->Name = L"txtdatos";
                    this->txtdatos->Size = System::Drawing::Size(262, 20);
                    this->txtdatos->TabIndex = 33;
                    this->txtdatos->TextAlign = System::Windows::Forms::HorizontalAlignment::Right;
                    //
                    // btnigual
                    //
                    this->btnigual->Font = (gcnew System::Drawing::Font(L"Arial Black", 12, System::Drawing::FontStyle::Bold, System::Drawing::GraphicsUnit::Point,
                           static_cast<System::Byte>(0)));
                    this->btnigual->Location = System::Drawing::Point(47, 69);
                    this->btnigual->Name = L"btnigual";
                    this->btnigual->Size = System::Drawing::Size(37, 37);
                    this->btnigual->TabIndex = 32;
                    this->btnigual->Text = L"=";
                    this->btnigual->UseVisualStyleBackColor = true;
                    this->btnigual->Click += gcnew System::EventHandler(this, &Form1::btnigual_Click);
                    //
                    // btndiv
                    //
                    this->btndiv->Font = (gcnew System::Drawing::Font(L"Arial Black", 12, System::Drawing::FontStyle::Bold, System::Drawing::GraphicsUnit::Point,
                           static_cast<System::Byte>(0)));
                    this->btndiv->Location = System::Drawing::Point(90, 69);
                    this->btndiv->Name = L"btndiv";
                    this->btndiv->Size = System::Drawing::Size(37, 37);
                    this->btndiv->TabIndex = 31;
                    this->btndiv->Text = L"/";
                    this->btndiv->UseVisualStyleBackColor = true;
                    this->btndiv->Click += gcnew System::EventHandler(this, &Form1::btndiv_Click);
                    //
                    // btnres
                    //
                    this->btnres->Font = (gcnew System::Drawing::Font(L"Arial Black", 12, System::Drawing::FontStyle::Bold, System::Drawing::GraphicsUnit::Point,
                           static_cast<System::Byte>(0)));
                    this->btnres->Location = System::Drawing::Point(47, 112);
                    this->btnres->Name = L"btnres";
                    this->btnres->Size = System::Drawing::Size(37, 37);
                    this->btnres->TabIndex = 30;
                    this->btnres->Text = L"-";
                    this->btnres->UseVisualStyleBackColor = true;
                    this->btnres->Click += gcnew System::EventHandler(this, &Form1::btnres_Click);
                    //
                    // btnsum
                    //
                    this->btnsum->Font = (gcnew System::Drawing::Font(L"Arial Black", 12, System::Drawing::FontStyle::Bold, System::Drawing::GraphicsUnit::Point,
                           static_cast<System::Byte>(0)));
                    this->btnsum->Location = System::Drawing::Point(47, 26);
                    this->btnsum->Name = L"btnsum";
                    this->btnsum->Size = System::Drawing::Size(37, 37);
                    this->btnsum->TabIndex = 29;
                    this->btnsum->Text = L"+";
                    this->btnsum->UseVisualStyleBackColor = true;
                    this->btnsum->Click += gcnew System::EventHandler(this, &Form1::btnsum_Click);
                    //
                    // btnmul
                    //
                    this->btnmul->Font = (gcnew System::Drawing::Font(L"Arial Black", 12, System::Drawing::FontStyle::Bold, System::Drawing::GraphicsUnit::Point,
                           static_cast<System::Byte>(0)));
                    this->btnmul->Location = System::Drawing::Point(4, 69);
                    this->btnmul->Name = L"btnmul";
                    this->btnmul->Size = System::Drawing::Size(37, 37);
                    this->btnmul->TabIndex = 28;
                    this->btnmul->Text = L"X";
                    this->btnmul->UseVisualStyleBackColor = true;
                    this->btnmul->Click += gcnew System::EventHandler(this, &Form1::btnmul_Click);
                    //
                    // btn1
                    //
                    this->btn1->Font = (gcnew System::Drawing::Font(L"Arial Black", 12, System::Drawing::FontStyle::Bold, System::Drawing::GraphicsUnit::Point,
                           static_cast<System::Byte>(0)));
                    this->btn1->Location = System::Drawing::Point(6, 112);
                    this->btn1->Name = L"btn1";
                    this->btn1->Size = System::Drawing::Size(37, 37);
                    this->btn1->TabIndex = 27;
                    this->btn1->Text = L"1";
                    this->btn1->UseVisualStyleBackColor = true;
                    this->btn1->Click += gcnew System::EventHandler(this, &Form1::btn1_Click);
                    //
                    // btn3
                    //
                    this->btn3->Font = (gcnew System::Drawing::Font(L"Arial Black", 12, System::Drawing::FontStyle::Bold, System::Drawing::GraphicsUnit::Point,
                           static_cast<System::Byte>(0)));
                    this->btn3->Location = System::Drawing::Point(92, 112);
                    this->btn3->Name = L"btn3";
                    this->btn3->Size = System::Drawing::Size(37, 37);
                    this->btn3->TabIndex = 26;
                    this->btn3->Text = L"3";
                    this->btn3->UseVisualStyleBackColor = true;
                    this->btn3->Click += gcnew System::EventHandler(this, &Form1::btn3_Click);
                    //
                    // btn4
                    //
                    this->btn4->Font = (gcnew System::Drawing::Font(L"Arial Black", 12, System::Drawing::FontStyle::Bold, System::Drawing::GraphicsUnit::Point,
                           static_cast<System::Byte>(0)));
                    this->btn4->Location = System::Drawing::Point(6, 69);
                    this->btn4->Name = L"btn4";
                    this->btn4->Size = System::Drawing::Size(37, 37);
                    this->btn4->TabIndex = 25;
                    this->btn4->Text = L"4";
                    this->btn4->UseVisualStyleBackColor = true;
                    this->btn4->Click += gcnew System::EventHandler(this, &Form1::btn4_Click);
                    //
                    // btn7
                    //
                    this->btn7->Font = (gcnew System::Drawing::Font(L"Arial Black", 12, System::Drawing::FontStyle::Bold, System::Drawing::GraphicsUnit::Point,
                           static_cast<System::Byte>(0)));
                    this->btn7->Location = System::Drawing::Point(6, 26);
                    this->btn7->Name = L"btn7";
                    this->btn7->Size = System::Drawing::Size(37, 37);
                    this->btn7->TabIndex = 24;
                    this->btn7->Text = L"7";
                    this->btn7->UseVisualStyleBackColor = true;
                    this->btn7->Click += gcnew System::EventHandler(this, &Form1::btn7_Click);
                    //
                    // btn5
                    //
                    this->btn5->Font = (gcnew System::Drawing::Font(L"Arial Black", 12, System::Drawing::FontStyle::Bold, System::Drawing::GraphicsUnit::Point,
                           static_cast<System::Byte>(0)));
                    this->btn5->Location = System::Drawing::Point(49, 69);
                    this->btn5->Name = L"btn5";
                    this->btn5->Size = System::Drawing::Size(37, 37);
                    this->btn5->TabIndex = 23;
                    this->btn5->Text = L"5";
                    this->btn5->UseVisualStyleBackColor = true;
                    this->btn5->Click += gcnew System::EventHandler(this, &Form1::btn5_Click);
                    //
                    // btn8
                    //
                    this->btn8->Font = (gcnew System::Drawing::Font(L"Arial Black", 12, System::Drawing::FontStyle::Bold, System::Drawing::GraphicsUnit::Point,
                           static_cast<System::Byte>(0)));
                    this->btn8->Location = System::Drawing::Point(49, 26);
                    this->btn8->Name = L"btn8";
                    this->btn8->Size = System::Drawing::Size(37, 37);
                    this->btn8->TabIndex = 22;
                    this->btn8->Text = L"8";
                    this->btn8->UseVisualStyleBackColor = true;
                    this->btn8->Click += gcnew System::EventHandler(this, &Form1::btn8_Click);
                    //
                    // btn9
                    //
                    this->btn9->Font = (gcnew System::Drawing::Font(L"Arial Black", 12, System::Drawing::FontStyle::Bold, System::Drawing::GraphicsUnit::Point,
                           static_cast<System::Byte>(0)));
                    this->btn9->Location = System::Drawing::Point(92, 26);
                    this->btn9->Name = L"btn9";
                    this->btn9->Size = System::Drawing::Size(37, 37);
                    this->btn9->TabIndex = 21;
                    this->btn9->Text = L"9";
                    this->btn9->UseVisualStyleBackColor = true;
                    this->btn9->Click += gcnew System::EventHandler(this, &Form1::btn9_Click);
                    //
                    // btn6
                    //
                    this->btn6->Font = (gcnew System::Drawing::Font(L"Arial Black", 12, System::Drawing::FontStyle::Bold, System::Drawing::GraphicsUnit::Point,
                           static_cast<System::Byte>(0)));
                    this->btn6->Location = System::Drawing::Point(92, 69);
                    this->btn6->Name = L"btn6";
                    this->btn6->Size = System::Drawing::Size(37, 37);
                    this->btn6->TabIndex = 20;
                    this->btn6->Text = L"6";
                    this->btn6->UseVisualStyleBackColor = true;
                    this->btn6->Click += gcnew System::EventHandler(this, &Form1::btn6_Click);
                    //
                    // btn0
                    //
                    this->btn0->Font = (gcnew System::Drawing::Font(L"Arial Black", 12, System::Drawing::FontStyle::Bold, System::Drawing::GraphicsUnit::Point,
                           static_cast<System::Byte>(0)));
                    this->btn0->Location = System::Drawing::Point(49, 155);
                    this->btn0->Name = L"btn0";
                    this->btn0->Size = System::Drawing::Size(37, 37);
                    this->btn0->TabIndex = 19;
                    this->btn0->Text = L"0";
                    this->btn0->UseVisualStyleBackColor = true;
                    this->btn0->Click += gcnew System::EventHandler(this, &Form1::btn0_Click);
                    //
                    // btn2
                    //
                    this->btn2->Font = (gcnew System::Drawing::Font(L"Arial Black", 12, System::Drawing::FontStyle::Bold, System::Drawing::GraphicsUnit::Point,
                           static_cast<System::Byte>(0)));
                    this->btn2->Location = System::Drawing::Point(49, 112);
                    this->btn2->Name = L"btn2";
                    this->btn2->Size = System::Drawing::Size(37, 37);
                    this->btn2->TabIndex = 18;
                    this->btn2->Text = L"2";
                    this->btn2->UseVisualStyleBackColor = true;
                    this->btn2->Click += gcnew System::EventHandler(this, &Form1::btn2_Click);
                    //
                    // groupBox1
                    //
                    this->groupBox1->BackColor = System::Drawing::Color::Silver;
                    this->groupBox1->Controls->Add(this->btnigual);
                    this->groupBox1->Controls->Add(this->btnclear);
                    this->groupBox1->Controls->Add(this->btnmul);
                    this->groupBox1->Controls->Add(this->btnsum);
                    this->groupBox1->Controls->Add(this->btnres);
                    this->groupBox1->Controls->Add(this->btndiv);
                    this->groupBox1->Location = System::Drawing::Point(153, 50);
                    this->groupBox1->Name = L"groupBox1";
                    this->groupBox1->Size = System::Drawing::Size(134, 197);
                    this->groupBox1->TabIndex = 35;
                    this->groupBox1->TabStop = false;
                    this->groupBox1->Text = L"Operaciones:";
                    //
                    // groupBox2
                    //
                    this->groupBox2->BackColor = System::Drawing::Color::Silver;
                    this->groupBox2->Controls->Add(this->btn5);
                    this->groupBox2->Controls->Add(this->btn2);
                    this->groupBox2->Controls->Add(this->btn0);
                    this->groupBox2->Controls->Add(this->btn1);
                    this->groupBox2->Controls->Add(this->btn6);
                    this->groupBox2->Controls->Add(this->btn3);
                    this->groupBox2->Controls->Add(this->btn9);
                    this->groupBox2->Controls->Add(this->btn4);
                    this->groupBox2->Controls->Add(this->btn8);
                    this->groupBox2->Controls->Add(this->btn7);
                    this->groupBox2->Location = System::Drawing::Point(12, 50);
                    this->groupBox2->Name = L"groupBox2";
                    this->groupBox2->Size = System::Drawing::Size(135, 197);
                    this->groupBox2->TabIndex = 36;
                    this->groupBox2->TabStop = false;
                    this->groupBox2->Text = L"Datos:";
                    //
                    // Form1
                    //
                    this->AutoScaleDimensions = System::Drawing::SizeF(6, 13);
                    this->AutoScaleMode = System::Windows::Forms::AutoScaleMode::Font;
                    this->BackColor = System::Drawing::SystemColors::ControlLight;
                    this->ClientSize = System::Drawing::Size(300, 255);
                    this->Controls->Add(this->groupBox2);
                    this->Controls->Add(this->groupBox1);
                    this->Controls->Add(this->txtdatos);
                    this->Name = L"Form1";
                    this->Text = L"Calculadora";
                    this->groupBox1->ResumeLayout(false);
                    this->groupBox2->ResumeLayout(false);
                    this->ResumeLayout(false);
                    this->PerformLayout();

             }
#pragma endregion
       //programamos las acciones de cada botón

//boton de igual
private: System::Void btnigual_Click(System::Object^  sender, System::EventArgs^  e) {
                    //si las variables a y b son nulas
                     if(a==""&b=="")
                    {
                           //se mostrará un mensaje de advertencia
                           MessageBox::Show("No ha insertado cantidades");
                    }

                     //si la cantidad b no fue ingresada le asignará un cero     
                     else if(b==""){
                                               b="0";                    
                                               //asignamos a cant1 y cant2 los valores de a y b convertidos a tipo entero
                                               cant1=System::Int32::Parse(a);
                                               cant2=System::Int32::Parse(b);
                                               //salida será igual al valor retornado por el método operación,
                                               //enviamos por parámetros los valores de cant1(cantidad 1), cant2(cantidad 2)
                                               //y numoper(número de operación)
                                               salida=operacion(cant1,cant2,numoper);
                                               //mostramos en le textBox txtdatos la operación
                                               //la variable salida se convierte a string pues es de tipo entero
                                               txtdatos->Text=a+operador+b+"="+salida.ToString();
                                               }
                     //si no sucede
                             else{
                                               //asignamos a cant1 y cant2 los valores de a y b convertidos a tipo entero
                                               cant1=System::Int32::Parse(a);
                                               cant2=System::Int32::Parse(b);
                                               //salida será igual al valor retornado por el método operación,
                                               //enviamos por parámetros los valores de cant1(cantidad 1), cant2(cantidad 2)
                                               //y numoper(número de operación)
                                               salida=operacion(cant1,cant2,numoper);
                                               //mostramos en le textBox txtdatos la operación
                                               //la variable salida se convierte a string pues es de tipo entero
                                               txtdatos->Text=a+operador+b+"="+salida.ToString();
                             }
                     //}
              }
              //boton para sumar
private: System::Void btnsum_Click(System::Object^  sender, System::EventArgs^  e) {
                     //si la variable a no fue ingresada asignará un cero
                     if(a=="")
                           {
                                  a="0";
                           }
                     //si no a tomará su mismo valor
                           else
                           {
                                  a=a;
                           }
                     //numero de cantidad es 1
                     numcant=1;
                     //numero de operacion es 1 para indicar suma
                     numoper=1;
                     //operador tomará el valor de +
                     operador="+";
                     //el textBox txtdatos mostrará el valor de a y el operador arimético
                     txtdatos->Text=a+operador;
              }
private: System::Void btnres_Click(System::Object^  sender, System::EventArgs^  e) {
                     //si la variable a no fue ingresada asignará un cero
                     if(a=="")
                           {
                                  a="0";
                           }
                     //si no a tomará su mismo valor
                           else
                           {
                                  a=a;
                           }
                     //numero de cantidad es 1
                     numcant=1;
                     //numero de operacion es 2 para indicar resta
                     numoper=2;
                     //operador tomará el valor de -
                     operador="-";
                     //el textBox txtdatos mostrará el valor de a y el operador arimético
                     txtdatos->Text=a+operador;
              }

              //boton para multiplicar
private: System::Void btnmul_Click(System::Object^  sender, System::EventArgs^  e) {
                    //si la variable a no fue ingresada asignará un cero
                     if(a=="")
                           {
                                  a="0";
                           }
                     //si no a tomará su mismo valor
                           else
                           {
                                  a=a;
                           }
                     //numero de cantidad es 1
                     numcant=1;
                     //numero de operacion es 3 para indicar multiplicación
                     numoper=3;
                     //operador tomará el valor de x
                     operador="x";
                     //el textBox txtdatos mostrará el valor de a y el operador arimético
                     txtdatos->Text=a+operador;
              }
              //boton para resta
              //boton para division
private: System::Void btndiv_Click(System::Object^  sender, System::EventArgs^  e) {
                     //si la variable a no fue ingresada asignará un cero
                     if(a=="")
                           {
                                  a="0";
                           }
                     //si no a tomará su mismo valor
                           else
                           {
                                  a=a;
                           }
                     //numero de cantidad es 1
                     numcant=1;
                     //numero de operacion es 4 para indicar division
                     numoper=4;
                     //operador tomará el valor de /
                     operador="/";
                     //el textBox txtdatos mostrará el valor de a y el operador arimético
                     txtdatos->Text=a+operador;
              }
private: System::Void btn0_Click(System::Object^  sender, System::EventArgs^  e) {
                     //si numero de cantidad es cero
                     if(numcant==0)
                     {    
                            //a será iguala a a mas 0
                            a=a+"0";
                            //el textbox txtdatos mostrará el valor de a
                            txtdatos->Text=a;
                     }
                     //si no
                     else
                     {
                            //b es igual a b mas 0
                            b=b+"0";
                            //el textbox txtdatos mostrará la variable a, el operador y la variable b
                            txtdatos->Text=a+operador+b;
                     }
              }
private: System::Void btn1_Click(System::Object^  sender, System::EventArgs^  e) {
                    //si numero de cantidad es cero
                     if(numcant==0)
                     {    
                            //a será iguala a a mas 1
                            a=a+"1";
                            //el textbox txtdatos mostrará el valor de a
                            txtdatos->Text=a;
                     }
                     //si no
                     else
                     {
                            //b es igual a b mas 1
                            b=b+"1";
                            //el textbox txtdatos mostrará la variable a, el operador y la variable b
                            txtdatos->Text=a+operador+b;
                     }
              }
private: System::Void btn2_Click(System::Object^  sender, System::EventArgs^  e) {
                    //si numero de cantidad es cero
                     if(numcant==0)
                     {    
                            //a será iguala a a mas 2
                            a=a+"2";
                            //el textbox txtdatos mostrará el valor de a
                            txtdatos->Text=a;
                     }
                     //si no
                     else
                     {
                            //b es igual a b mas 2
                            b=b+"2";
                            //el textbox txtdatos mostrará la variable a, el operador y la variable b
                            txtdatos->Text=a+operador+b;
                     }
              }
private: System::Void btn3_Click(System::Object^  sender, System::EventArgs^  e) {
                     //si numero de cantidad es cero
                     if(numcant==0)
                     {    
                            //a será iguala a a mas 3
                            a=a+"3";
                            //el textbox txtdatos mostrará el valor de a
                            txtdatos->Text=a;
                     }
                     //si no
                     else
                     {
                            //b es igual a b mas 3
                            b=b+"3";
                            //el textbox txtdatos mostrará la variable a, el operador y la variable b
                            txtdatos->Text=a+operador+b;
                     }
              }
private: System::Void btn4_Click(System::Object^  sender, System::EventArgs^  e) {
                     //si numero de cantidad es cero
                     if(numcant==0)
                     {    
                            //a será iguala a a mas 4
                            a=a+"4";
                            //el textbox txtdatos mostrará el valor de a
                            txtdatos->Text=a;
                     }
                     //si no
                     else
                     {
                            //b es igual a b mas 4
                            b=b+"4";
                            //el textbox txtdatos mostrará la variable a, el operador y la variable b
                            txtdatos->Text=a+operador+b;
                     }
              }
private: System::Void btn5_Click(System::Object^  sender, System::EventArgs^  e) {
                     //si numero de cantidad es cero
                     if(numcant==0)
                     {    
                            //a será iguala a a mas 5
                            a=a+"5";
                            //el textbox txtdatos mostrará el valor de a
                            txtdatos->Text=a;
                     }
                     //si no
                     else
                     {
                            //b es igual a b mas 5
                            b=b+"5";
                            //el textbox txtdatos mostrará la variable a, el operador y la variable b
                            txtdatos->Text=a+operador+b;
                     }
              }
private: System::Void btn6_Click(System::Object^  sender, System::EventArgs^  e) {
                     //si numero de cantidad es cero
                     if(numcant==0)
                     {    
                            //a será iguala a a mas 6
                            a=a+"6";
                            //el textbox txtdatos mostrará el valor de a
                            txtdatos->Text=a;
                     }
                     //si no
                     else
                     {
                            //b es igual a b mas 6
                            b=b+"6";
                            //el textbox txtdatos mostrará la variable a, el operador y la variable b
                            txtdatos->Text=a+operador+b;
                     }
              }
private: System::Void btn7_Click(System::Object^  sender, System::EventArgs^  e) {
                     //si numero de cantidad es cero
                     if(numcant==0)
                     {    
                            //a será iguala a a mas 7
                            a=a+"7";
                            //el textbox txtdatos mostrará el valor de a
                            txtdatos->Text=a;
                     }
                     //si no
                     else
                     {
                            //b es igual a b mas 7
                            b=b+"7";
                            //el textbox txtdatos mostrará la variable a, el operador y la variable b
                            txtdatos->Text=a+operador+b;
                     }
              }
private: System::Void btn8_Click(System::Object^  sender, System::EventArgs^  e) {
                     //si numero de cantidad es cero
                     if(numcant==0)
                     {    
                            //a será iguala a a mas 8
                            a=a+"8";
                            //el textbox txtdatos mostrará el valor de a
                            txtdatos->Text=a;
                     }
                     //si no
                     else
                     {
                            //b es igual a b mas 8
                            b=b+"8";
                            //el textbox txtdatos mostrará la variable a, el operador y la variable b
                            txtdatos->Text=a+operador+b;
                     }
              }
private: System::Void btn9_Click(System::Object^  sender, System::EventArgs^  e) {
                     //si numero de cantidad es cero
                     if(numcant==0)
                     {    
                            //a será iguala a a mas 9
                            a=a+"9";
                            //el textbox txtdatos mostrará el valor de a
                            txtdatos->Text=a;
                     }
                     //si no
                     else
                     {
                            //b es igual a b mas 9
                            b=b+"9";
                            //el textbox txtdatos mostrará la variable a, el operador y la variable b
                            txtdatos->Text=a+operador+b;
                     }
              }

private: System::Void btnclear_Click(System::Object^  sender, System::EventArgs^  e) {
                     txtdatos->Text="";
                     numcant=0;
                     numoper=0;
                     a="";
                     b="";
                     operador="";
              }
};
}




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