Operators
An operator is a symbol that tells the compiler to perform specific mathematical or logical manipulations. There are diffrent type of operator these are givin below.
1-Arithmetic Operators
2-Relational Operators
3- Logical Operators
4- Bitwise Operators
5- Assignment Operators
6- Misc Operators
This tutorial will explain the arithmetic, relational, and logical, bitwise, assignment and other operators one by one.

Arithmetic Operators:

Here are the most common arithmetic operators
+ Addition,
- Subtraction,
* Multiplication,
/ Division ,
% Modulus Operator and remainder of after an integer division

Arithmetic operators program

using System;

class Program
{
static void Main(string[] args)
{
int a = 21;
int b = 10;
int c;
c = a + b;
Console.WriteLine("Line 1 - Value of c is {0}", c);
c = a - b;
Console.WriteLine("Line 2 - Value of c is {0}", c);
c = a * b;
Console.WriteLine("Line 3 - Value of c is {0}", c);
c = a / b;
Console.WriteLine("Line 4 - Value of c is {0}", c);
c = a % b;
Console.WriteLine("Line 5 - Value of c is {0}", c);
c = a++;
Console.WriteLine("Line 6 - Value of c is {0}", c);
c = a--;
Console.WriteLine("Line 7 - Value of c is {0}", c);
Console.ReadLine();
}
}

Output :
Line 1 - Value of c is 31
Line 2 - Value of c is 11
Line 3 - Value of c is 210
Line 4 - Value of c is 2
Line 5 - Value of c is 1
Line 6 - Value of c is 21
Line 7 - Value of c is 22

Relational Operators

The relational operators compare values to one other. The comparison operators are =, <>, <, >, <=, and >=. All of the relational operators result in a Boolean value.
The relational operators have the following general meaning:
1- The = operator tests whether the two operands are equal.
2- The <> operator tests whether the two operands are not equal.
3- The < operator tests whether the first operand is less than the second operand.
4- The > operator tests whether the first operand is greater than the second operand.
5- The <= operator tests whether the first operand is less than or equal to the second operand.
6- The >= operator tests whether the first operand is greater than or equal to the second operand.

Relational Operators program:

using System;

class Program
{
static void Main()
{
int a = 21;
int b = 10;
if (a == b)
{
Console.WriteLine("Line 1 - a is equal to b");
}
else
{
Console.WriteLine("Line 1 - a is not equal to b");
}
if (a < b)
{
Console.WriteLine("Line 2 - a is less than b");
}
else
{
Console.WriteLine("Line 2 - a is not less than b");
}
if (a > b)
{
Console.WriteLine("Line 3 - a is greater than b");
}
else
{
Console.WriteLine("Line 3 - a is not greater than b");
}
/* Lets change value of a and b */
a = 5;
b = 20;
if (a <= b)
{
Console.WriteLine("Line 4 - a is either less than or equal to b");
}
if (b >= a)
{
Console.WriteLine("Line 5-b is either greater than or equal to b");
}
}
OutPut:
Line 1 - a is not equal to b
Line 2 - a is not less than b
Line 3 - a is greater than b
Line 4 - a is either less than or equal to b

Line 5 - b is either greater than or equal to b

Logical Operators

The And, Not, Or, and Xor operators, which are called the logical operators, are evaluated as follows:
For the Boolean type:
1- A logical And operation is performed on its two operands.
2- A logical Not operation is performed on its operand.
3- A logical Or operation is performed on its two operands.
4- A logical exclusive-Or operation is performed on its two operands.
Logical Operator Program:

using System;
class Program
{
static void Main()
{
bool a = true;
bool b = true;
if (a && b)
{
Console.WriteLine("Line 1 - Condition is true");
}
if (a || b)
{
Console.WriteLine("Line 2 - Condition is true");
}
/* lets change the value of a and b */
a = false;
b = true;
if (a && b)
{
Console.WriteLine("Line 3 - Condition is true");
}
else
{
Console.WriteLine("Line 3 - Condition is not true");
}
if(!(a && b))
{
Console.WriteLine("Line 4 - Condition is true");
}
Console.ReadLine();
}
}

Output:
Line 1 - Condition is true
Line 2 - Condition is true
Line 3 - Condition is not true
Line 4 - Condition is true

BitWise Operator

The c# bitwise operators I shall be covering here and are of particular interest to me in my followup post are :
1. binary OR(|) operator
2. binary AND(&) operator
3. XOR (^) operator
4. Not (~) operator
5. left shift(<<) operator
6. Right shift(>>) operator

using System;
namespace OperatorsAppl
{
class Program
{
static void Main(string[] args)
{
int a = 60; /* 60 = 0011 1100 */
int b = 13; /* 13 = 0000 1101 */
int c = 0;

c = a & b; /* 12 = 0000 1100 */
Console.WriteLine("Line 1 - Value of c is {0}", c );

c = a | b; /* 61 = 0011 1101 */
Console.WriteLine("Line 2 - Value of c is {0}", c);

c = a ^ b; /* 49 = 0011 0001 */
Console.WriteLine("Line 3 - Value of c is {0}", c);

c = ~a; /*-61 = 1100 0011 */
Console.WriteLine("Line 4 - Value of c is {0}", c);

c = a << 2; /* 240 = 1111 0000 */
Console.WriteLine("Line 5 - Value of c is {0}", c);

c = a >> 2; /* 15 = 0000 1111 */
Console.WriteLine("Line 6 - Value of c is {0}", c);
Console.ReadLine();
}
}
}
When the above code is compiled and executed, it produces the following result:
Line 1 - Value of c is 12
Line 2 - Value of c is 61
Line 3 - Value of c is 49
Line 4 - Value of c is -61
Line 5 - Value of c is 240

Line 6 - Value of c is 15

Assignment operators

There are following assignment operators supported by C#:

Example

Try the following example to understand all the assignment operators available in C#:

using System;

class Program

{

static void Main(string[] args)

{

int a = 21;

int c;

c = a;

Console.WriteLine("Line 1 - = Value of c = {0}", c);

c += a;

Console.WriteLine("Line 2 - += Value of c = {0}", c);

c -= a;

Console.WriteLine("Line 3 - -= Value of c = {0}", c);

c *= a;

Console.WriteLine("Line 4 - *= Value of c = {0}", c);

c /= a;

Console.WriteLine("Line 5 - /= Value of c = {0}", c);

c = 200;

c %= a;

Console.WriteLine("Line 6 - %= Value of c = {0}", c);

c <<= 2;

Console.WriteLine("Line 7 - <<= Value of c = {0}", c);

c >>= 2;

Console.WriteLine("Line 8 - >>= Value of c = {0}", c);

c &= 2;

Console.WriteLine("Line 9 - &= Value of c = {0}", c);

c ^= 2;

Console.WriteLine("Line 10 - ^= Value of c = {0}", c);

c |= 2;

Console.WriteLine("Line 11 - |= Value of c = {0}", c);

Console.ReadLine();

}

OutPut:

Line 1 - = Value of c = 21

Line 2 - += Value of c = 42

Line 3 - -= Value of c = 21

Line 4 - *= Value of c = 441

Line 5 - /= Value of c = 21

Line 6 - %= Value of c = 11

Line 7 - <<= Value of c = 44

Line 8 - >>= Value of c = 11

Line 9 - &= Value of c = 2

Line 10 - ^= Value of c = 0

Line 11 - |= Value of c = 2

Misc Operator OR Ternary Operator

The conditional operator (?:) returns one of two values depending on the value of a Boolean expression. Following is the syntax for the conditional operator.

condition ? first_expression : second_expression;

The condition must evaluate to true or false. If condition is true, first_expression is evaluated and becomes the result. If condition is false, second_expression is evaluated and becomes the result. Only one of the two expressions is evaluated.

Program of ternary operator:

using System;

{

class Program

{

static void Main()

{

/* example of sizeof operator */

Console.WriteLine("The size of int is {0}", sizeof(int));

Console.WriteLine("The size of short is {0}", sizeof(short));

Console.WriteLine("The size of double is {0}", sizeof(double));

/* example of ternary operator */

int a, b;

a = 10;

b = (a == 1) ? 20 : 30;

Console.WriteLine("Value of b is {0}", b);

b = (a == 10) ? 20 : 30;

Console.WriteLine("Value of b is {0}", b);

Console.ReadLine();

}

Output:

The size of int is 4

The size of short is 2

The size of double is 8

Value of b is 30

Value of b is 20

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Operators in c#