Lesson 5 | Operators in C#

C# provides a large set of operators, which are symbols that specify which operations to perform in an expression.

It  is a symbol that tells the compiler to perform specific mathematical or logical manipulations. Below are different types of operators in C#.

Assignment operator	=
Additive	x + y x - y
Multiplicative	x * y x / y x % y
Relational and type testing	x < y x > y x <= y x >= y is as
Equality	x == y x != y
Conditional AND	x && y
Conditional OR	x || y
Conditional	?:
Null-coalescing	x ?? y

1)Let us start with assignment operator

If we have variable I and we want to assign value 10 to this, we can use assignment operator

int i = 10;

if we want to assign true or false value to a bool type variable,we can use assignment operator.

bool check = true;

2) Additive

If we want to add 2 numbers, we will use Additive operator  +

int i = 10;

int j = 20;

int result=i+j;

Console.WriteLine("result is {0} ",result);

Console.ReadLine();

Please visit Operators in C# video tutorials.

 3)Multiplicative

If we divide 2 numbers,we get quotient and remainder.

if we use /,we get quotient.

int Numerator = 20;

int Denominator = 5;

int result = Numerator / Denominator;

Console.WriteLine("result is {0} ",result);

Console.ReadLine();

result=4

if we use %,we get remainder.

int Numerator = 21;

int Denominator = 5;

int result = Numerator % Denominator;

Console.WriteLine("result is {0} ",result);

Console.ReadLine();

result=1

4) Relational

If we want to check 2 numbers which is greater or smaller, we have to use Relational  operator

int x = 50;

int y = 20;

if (x > y)

{

Console.WriteLine("x is greater than y");

}

Console.ReadLine();

5) Equality

If we want to compare 2 numbers, we have to use Equality operator

int x = 20;

int y = 20;

if (x == y)

{

Console.WriteLine("x is equal to y");

}

Console.ReadLine();

if we want to check that x is not equal to y,we have to use !=

int x = 20;

int y = 25;

if (x != y)

{

Console.WriteLine("x is not equal to y");

}

Console.ReadLine();

6) Conditional AND  OR

If we have to check 2 conditions we can use && operator

int x = 50;

int y = 20;

if (x == 50 && y==20)

 {

 Console.WriteLine("both conditions are true");

 }

 Console.ReadLine();

If we want to satisfy one condition between two , we use or operator

int x = 50;

int y = 21;

if (x == 50 || y==20)

{

Console.WriteLine("one of two condition is true ");

}

Console.ReadLine();