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calculadora simples em c#
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace WindowsFormsApplication1
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
}
public class Global
{
public static string texto1 = " ", texto2 = " ";
public static int var1 = 0, var2 = 0, op = 0, entrada = 0;
}
private void button1_Click(object sender, EventArgs e)
{
if (Global.entrada == 0)
{
Global.texto1 += "7";
}
else
{
Global.texto2 += "7";
}
}
private void button2_Click(object sender, EventArgs e)
{
if (Global.entrada == 0)
{
Global.texto1 += "8";
}
else
{
Global.texto2 += "8";
}
}
private void button3_Click(object sender, EventArgs e)
{
if (Global.entrada == 0)
{
Global.texto1 += "9";
}
else
{
Global.texto2 += "9";
}
}
private void button4_Click(object sender, EventArgs e)
{
if (Global.entrada == 0)
{
Global.texto1 += "4";
}
else
{
Global.texto2 += "4";
}
}
private void button5_Click(object sender, EventArgs e)
{
if (Global.entrada == 0)
{
Global.texto1 += "5";
}
else
{
Global.texto2 += "5";
}
}
private void button6_Click(object sender, EventArgs e)
{
if (Global.entrada == 0)
{
Global.texto1 += "6";
}
else
{
Global.texto2 += "6";
}
}
private void button7_Click(object sender, EventArgs e)
{
if (Global.entrada == 0)
{
Global.texto1 += "1";
}
else
{
Global.texto2 += "1";
}
}
private void button8_Click(object sender, EventArgs e)
{
if (Global.entrada == 0)
{
Global.texto1 += "2";
}
else
{
Global.texto2 += "2";
}
}
private void button9_Click(object sender, EventArgs e)
{
if (Global.entrada == 0)
{
Global.texto1 += "3";
}
else
{
Global.texto2 += "3";
}
}
private void button10_Click(object sender, EventArgs e)
{
if (Global.entrada == 0)
{
Global.texto1 += "0";
}
else
{
Global.texto2 += "0";
}
}
private void button12_Click(object sender, EventArgs e)
{
if (Global.entrada == 0)
{
Global.entrada = 1;
Global.op = 1;
}
}
private void button13_Click(object sender, EventArgs e)
{
if (Global.entrada == 0)
{
Global.entrada = 1;
Global.op = 2;
}
}
private void button14_Click(object sender, EventArgs e)
{
if (Global.entrada == 0)
{
Global.entrada = 1;
Global.op = 3;
}
}
private void button15_Click(object sender, EventArgs e)
{
if (Global.entrada == 0)
{
Global.entrada = 1;
Global.op = 4;
}
}
private void button11_Click(object sender, EventArgs e)
{
if (Global.entrada >= 1)
{
Global.var1 = Convert.ToInt32(Global.texto1);
Global.var2 = Convert.ToInt32(Global.texto2);
for (int contador = 1; contador <=2; contador ++){
switch (Global.op)
{
case 1:
MessageBox.Show(Convert.ToString(Global.var1 + "+" + Global.var2 + "=" + (Global.var1 + Global.var2)));
Global.op = 5;
break;
case 2:
MessageBox.Show(Convert.ToString(Global.var1 + "-" + Global.var2 + "=" + (Global.var1 - Global.var2)));
Global.op = 5;
break;
case 3:
MessageBox.Show(Convert.ToString(Global.var1 + "x" + Global.var2 + "=" + (Global.var1 * Global.var2)));
Global.op = 5;
break;
case 4:
MessageBox.Show(Convert.ToString(Global.var1 + "/" + Global.var2 + "=" + (Global.var1 / Global.var2)));
Global.op = 5;
break;
case 5:
Global.texto1 = " ";
Global.texto2 = " ";
Global.var1 = 0;
Global.var2 = 0;
Global.entrada = 0;
Global.op = 0;
break;
}
}
}
}
}
}
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