using
System;using
System.Collections.Generic;using
System.ComponentModel;using
System.Data;using
System.Drawing;using
System.Text;using
System.Windows.Forms;namespace
WindowsApplication1{
public partial class Form1 : Form{
bool p = true; byte mod; double a, b, c; public Form1(){
InitializeComponent();
}
private void button1_Click( sender, EventArgs e){
if (p)textBox1.Text += button1.Text;
else{
textBox1.Clear();
textBox1.Text += button1.Text;
p = !p;
}
}
private void button16_Click( sender, EventArgs e){
a =
Convert.ToDouble(textBox1.Text );p = !p;
mod = 1;
}
private void button2_Click( sender, EventArgs e){
if (p)textBox1.Text += button2.Text;
else{
textBox1.Clear();
textBox1.Text += button2.Text;
p = !p;
}
}
private void button12_Click( sender, EventArgs e){
b =
Convert.ToDouble(textBox1.Text); switch (mod){
case 1:c = a + b;
break; case 2:c = a - b;
break; case 3:c = a * b;
break; case 4:c = a / b;
break;}
textBox1.Text = c.ToString();
}
private void button13_Click( sender, EventArgs e){
a =
Convert.ToDouble(textBox1.Text);p = !p;
mod = 2;
}
private void button15_Click( sender, EventArgs e){
a =
Convert.ToDouble(textBox1.Text);p = !p;
mod = 3;
}
private void button14_Click( sender, EventArgs e){
a =
Convert.ToDouble(textBox1.Text);p = !p;
mod = 4;
}
private void button3_Click( sender, EventArgs e){
if (p)textBox1.Text += button3.Text;
else{
textBox1.Clear();
textBox1.Text += button3.Text;
p = !p;
}
}
private void button4_Click( sender, EventArgs e){
if (p)textBox1.Text += button4.Text;
else{
textBox1.Clear();
textBox1.Text += button4.Text;
p = !p;
}
}
private void button5_Click( sender, EventArgs e){
if (p)textBox1.Text += button5.Text;
else{
textBox1.Clear();
textBox1.Text += button5.Text;
p = !p;
}
}
private void button6_Click( sender, EventArgs e){
if (p)textBox1.Text += button6.Text;
else{
textBox1.Clear();
textBox1.Text += button6.Text;
p = !p;
}
}
private void button7_Click( sender, EventArgs e){
if (p)textBox1.Text += button7.Text;
else{
textBox1.Clear();
textBox1.Text += button7.Text;
p = !p;
}
}
private void button8_Click( sender, EventArgs e){
if (p)textBox1.Text += button8.Text;
else{
textBox1.Clear();
textBox1.Text += button8.Text;
p = !p;
}
}
private void button9_Click( sender, EventArgs e){
if (p)textBox1.Text += button9.Text;
else{
textBox1.Clear();
textBox1.Text += button9.Text;
p = !p;
}
}
private void button10_Click( sender, EventArgs e){
if (p)textBox1.Text += button10.Text;
else{
textBox1.Clear();
textBox1.Text += button10.Text;
p = !p;
}
}
private void button17_Click( sender, EventArgs e){
a =
Convert.ToDouble(textBox1.Text );a =
Math.Sin(a);textBox1.Text = a.ToString();
}
private void Form1_Load( sender, EventArgs e){
}
}
}
