CODE OF CALCULATOR
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
calcuatoerqwe
{
public partial class Form1 : Form
{
public
Form1()
{
InitializeComponent();
}
private
void button3_Click(object
sender, EventArgs e)
{
if
(textBox1.ReadOnly == false)
{
textBox1.Text = textBox1.Text +
"1";
}
button19.ForeColor = Color.Blue;
button19.BackColor = Color.Yellow;
}
private
void button4_Click(object
sender, EventArgs e)
{
if
(textBox1.ReadOnly == false)
{
textBox1.Text = textBox1.Text +
"2";
}
}
private
void button5_Click(object
sender, EventArgs e)
{
if
(textBox1.ReadOnly == false)
{
textBox1.Text = textBox1.Text +
"3";
}
}
private
void button8_Click(object
sender, EventArgs e)
{
if
(textBox1.ReadOnly == false)
{
textBox1.Text = textBox1.Text +
"4";
}
}
private
void button7_Click(object
sender, EventArgs e)
{
if
(textBox1.ReadOnly == false)
{
textBox1.Text = textBox1.Text +
"5";
}
}
private
void button6_Click(object
sender, EventArgs e)
{
if
(textBox1.ReadOnly == false)
{
textBox1.Text = textBox1.Text +
"6";
}
}
private
void button11_Click(object
sender, EventArgs e)
{
if
(textBox1.ReadOnly == false)
{
textBox1.Text = textBox1.Text +
"7";
}
}
private
void button10_Click(object
sender, EventArgs e)
{
if
(textBox1.ReadOnly == false)
{
textBox1.Text = textBox1.Text +
"8";
}
}
private
void button9_Click(object
sender, EventArgs e)
{
if
(textBox1.ReadOnly == false)
{
textBox1.Text = textBox1.Text +
"9";
}
}
private
void button17_Click(object
sender, EventArgs e)
{
if
(textBox1.ReadOnly == false)
{
textBox1.Text = textBox1.Text +
"0";
}
}
private void
button18_Click(object sender, EventArgs e)
{
if
(textBox1.ReadOnly == false)
{
textBox1.Text = textBox1.Text +
".";
}
}
private
void button1_Click(object
sender, EventArgs e)
{
//textBox1.Clear();
textBox1.Text = "";
}
double
a, b, c;
int aa;
private
void button12_Click(object
sender, EventArgs e)
{
a = Convert.ToDouble(textBox1.Text);
textBox1.Clear();
aa = 1;
}
private
void button13_Click(object
sender, EventArgs e)
{
a = Convert.ToDouble(textBox1.Text);
textBox1.Clear();
aa = 2;
}
private
void button14_Click(object
sender, EventArgs e)
{
a = Convert.ToDouble(textBox1.Text);
textBox1.Clear();
aa = 3;
}
private
void button15_Click(object
sender, EventArgs e)
{
a = Convert.ToDouble(textBox1.Text);
textBox1.Clear();
aa = 4;
}
private
void button16_Click(object
sender, EventArgs e)
{
b = Convert.ToDouble(textBox1.Text);
textBox1.Clear();
switch
(aa)
{
case
1:
{
c = a + b;
textBox1.Text =
c.ToString();
break;
}
case
2:
{
c = a - b;
textBox1.Text =
c.ToString();
break;
}
case
3:
{
c = a * b;
textBox1.Text = c.ToString();
break;
}
case
4:
{
c = a / b;
textBox1.Text =
c.ToString();
break;
}
}
}
…./// back space
private
void button2_Click(object
sender, EventArgs e)
{
int
a = textBox1.Text.Length;
string
s = textBox1.Text;
textBox1.Clear();
for (int i = 0; i < a - 1; i++)
{
textBox1.Text = textBox1.Text +
s[i].ToString();
}
}
private
void button19_Click(object
sender, EventArgs e)
{
textBox1.ReadOnly = false;
}
private
void button20_Click(object
sender, EventArgs e)
{
textBox1.Text = "";
textBox1.ReadOnly = true;
}
private
void textBox1_KeyPress(object
sender, KeyPressEventArgs e)
{
if(!char.IsDigit(e.KeyChar))
{
e.Handled=true;
}
}
private
void groupBox1_Enter(object
sender, EventArgs e)
{
}
private
void button21_Click(object
sender, EventArgs e)
{
a = Convert.ToDouble(textBox1.Text);
textBox1.Text = Math.Sqrt(a).ToString();
}
private
void button19_MouseHover(object sender, EventArgs
e)
{
button19.Text = "please click me";
}
private
void button19_MouseLeave(object sender, EventArgs
e)
{
button19.Text = "on";
}
}
}
string s =
textBox1.Text;
int
aa = textBox1.Text.Length;
textBox2.Clear();
for
(int a = aa-1; a >=0; a--)
{
textBox2.Text = textBox2.Text +
(s[a].ToString());
}
if
(textBox1.Text == textBox2.Text)
{
MessageBox.Show("no. is palindrom");
}
else
{
MessageBox.Show("no. is not palindrom");
}
// decimal to binary
int b, c;
string
j = "";
string
p = "";
private
void button1_Click(object
sender, EventArgs e)
{
int a = Convert.ToInt32(textBox1.Text);
while
(a > 0)
{
b = a % 2;
c = a / 2;
a = c;
j += b.ToString();
//
a--;
}
int
l = j.Length;
for(int i=l-1;i>=0;i--)
{
p += j[i].ToString();
}
textBox2.Text = p.ToString();
}
//Binary to decimal
private
void button2_Click(object
sender, EventArgs e)
{
double
p=0;
int
l = textBox2.Text.Length;
string
s=textBox2.Text;
for
(int i = 0; i < l; i++)
{
p += Convert.ToDouble(s[i].ToString())
* Math.Pow(2, Convert.ToDouble(l
- (i + 1)));
}
textBox3.Text = p.ToString();
}
}
}
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