private void button8_Click(object sender, EventArgs e)
{
textBox1.Text = textBox1.Text + 2;
}
private void button9_Click(object sender, EventArgs e)
{
textBox1.Text = textBox1.Text + 1;
}
private void button13_Click(object sender, EventArgs e)
{
textBox1.Text = textBox1.Text + 3;
}
private void button3_Click(object sender, EventArgs e)
{
textBox1.Text = textBox1.Text + 6;
}
private void button2_Click(object sender, EventArgs e)
{
textBox1.Text = textBox1.Text + 5;
}
private void button10_Click(object sender, EventArgs e)
{
textBox1.Text = textBox1.Text + 4;
}
private void button6_Click(object sender, EventArgs e)
{
textBox1.Text = textBox1.Text + 9;
}
private void button7_Click(object sender, EventArgs e)
{
textBox1.Text = textBox1.Text + 8;
}
private void button1_Click(object sender, EventArgs e)
{
textBox1.Text = textBox1.Text + 7;
}
private void button5_Click(object sender, EventArgs e)
{
textBox1.Text = textBox1.Text + 0;
}
private void button16_Click(object sender, EventArgs e)
{
textBox1.Text = textBox1.Text + 0 + 0;
}
private void btnPlus_Click(object sender, EventArgs e)
{
num1 = float.Parse(textBox1.Text);
textBox1.Clear();
textBox1.Focus();
count = 2;
}
private void btnminus_Click(object sender, EventArgs e)
{
if (textBox1.Text != "")
{
num1 = float.Parse(textBox1.Text);
textBox1.Clear();
textBox1.Focus();
count = 1;
}
}
private void btnmultiply_Click(object sender, EventArgs e)
{
num1 = float.Parse(textBox1.Text);
textBox1.Clear();
textBox1.Focus();
count = 3;
}
private void btndivide_Click(object sender, EventArgs e)
{
num1 = float.Parse(textBox1.Text);
textBox1.Clear();
textBox1.Focus();
count = 4;
}
private void btnequal_Click(object sender, EventArgs e)
{
compute(count);
}
public void compute(int count)
{
switch (count)
{
case 1:
ans = num1 - float.Parse(textBox1.Text);
textBox1.Text = ans.ToString();
break;
case 2:
ans = num1 + float.Parse(textBox1.Text);
textBox1.Text = ans.ToString();
break;
case 3:
ans = num1 * float.Parse(textBox1.Text);
textBox1.Text = ans.ToString();
break;
case 4:
ans = num1 / float.Parse(textBox1.Text);
textBox1.Text = ans.ToString();
break;
default:
break;
}
}
private void btnC_Click(object sender, EventArgs e)
{
textBox1.Clear();
count = 0;
}
private void button15_Click(object sender, EventArgs e)
{
int c = textBox1.TextLength;
int flag = 0;
string text = textBox1.Text;
for (int i = 0; i < c; i++)
{
if (text[i].ToString() == ".")
{
flag = 1; break;
}
else
{
flag = 0;
}
}
if (flag == 0)
{
textBox1.Text = textBox1.Text + ".";
}
} Write, Run & Share C# code online using OneCompiler's C# online compiler for free. It's one of the robust, feature-rich online compilers for C# language, running on the latest version 8.0. Getting started with the OneCompiler's C# compiler is simple and pretty fast. The editor shows sample boilerplate code when you choose language as C# and start coding.
OneCompiler's C# online compiler supports stdin and users can give inputs to programs using the STDIN textbox under the I/O tab. Following is a sample program which takes name as input and print your name with hello.
using System;
namespace Sample
{
class Test
{
public static void Main(string[] args)
{
string name;
name = Console.ReadLine();
Console.WriteLine("Hello {0} ", name);
}
}
}
C# is a general purpose object-oriented programming language by Microsoft. Though initially it was developed as part of .net but later it was approved by ECMA and ISO standards.
You can use C# to create variety of applications, like web, windows, mobile, console applications and much more using Visual studio.
| Data Type | Description | Range | size |
|---|---|---|---|
| int | To store integers | -2,147,483,648 to 2,147,483,647 | 4 bytes |
| double | to store large floating point numbers with decimals | can store 15 decimal digits | 8 bytes |
| float | to store floating point numbers with decimals | can store upto 7 decimal digits | 4 bytes |
| char | to store single characters | - | 2 bytes |
| string | to stores text | - | 2 bytes per character |
| bool | to stores either true or false | - | 1 bit |
datatype variable-name = value;
When ever you want to perform a set of operations based on a condition or set of few conditions IF-ELSE is used.
if(conditional-expression) {
// code
}
else {
// code
}
You can also use if-else for nested Ifs and If-Else-If ladder when multiple conditions are to be performed on a single variable.
Switch is an alternative to If-Else-If ladder.
switch(conditional-expression) {
case value1:
// code
break; // optional
case value2:
// code
break; // optional
...
default:
// code to be executed when all the above cases are not matched;
}
For loop is used to iterate a set of statements based on a condition.
for(Initialization; Condition; Increment/decrement) {
// code
}
While is also used to iterate a set of statements based on a condition. Usually while is preferred when number of iterations are not known in advance.
while(condition) {
// code
}
Do-while is also used to iterate a set of statements based on a condition. It is mostly used when you need to execute the statements atleast once.
do {
// code
} while (condition);
Array is a collection of similar data which is stored in continuous memory addresses. Array values can be fetched using index. Index starts from 0 to size-1.
data-type[] array-name;
Method is a set of statements which gets executed only when they are called. Call the method name in the main function to execute the method.
static void method-name()
{
// code to be executed
}