# # C Operators Let add operator to our world

An operator is a symbol which performs certain operation on values or variables.

The operators in C can be classified as:

## # Arithmetic Operators

An arithmetic operator performs mathematical operations such as addition, subtraction and multiplication on numerical values (constants and variables).

Operator Meaning of Operator
+ addition
- subtraction
* multiplication
/ division
% remainder after division( modulo division)

Below program demonstrate the use of arithmetic operator :

## # Increment and decrement Operator

Operator Meaning of Operator
Increment ++ increases the value by 1
Decrement -- decreases the value by 1

Below program demonstrate the use of Increment and decrement Operator :

## # Assignment Operators

An assignment operator is used for assigning a value to a variable. The most common assignment operator is =

Operator Example Same as
= a = b a =b
+= a += b a = a+b
-= a -= b a = a-b
*= a *= b a = a*b
%= a %= b a = a%b

Below program demonstrate the use of Assignment Operators :

## # Relational(or logical) Operators

A relational operator checks the relationship between two operands. If the relation is true, it returns 1; if the relation is false, it returns value 0.

Relational operators are used in decision making and loops (We will read in next chapter).

OperatorDescriptionExample
== Checks if the value of two operands is equal or not, if yes then condition becomes true. (A == B) is not true.
!= Checks if the value of two operands is equal or not, if values are not equal then condition becomes true. (A != B) is true.
> Checks if the value of left operand is greater than the value of right operand, if yes then condition becomes true. (A > B) is not true.
< Checks if the value of left operand is less than the value of right operand, if yes then condition becomes true. (A < B) is true.
>= Checks if the value of left operand is greater than or equal to the value of right operand, if yes then condition becomes true. (A >= B) is not true.
<= Checks if the value of left operand is less than or equal to the value of right operand, if yes then condition becomes true. (A <= B) is true.
&& Called Logical AND operator. If both the operands are non zero then then condition becomes true. (A && B) is true.
||Called Logical OR Operator. If any of the two operands is non zero then then condition becomes true. (A || B) is true.
!Called Logical NOT Operator. Use to reverses the logical state of its operand. If a condition is true then Logical NOT operator will make false. !(A && B) is false.

Below program demonstrate the use of Relational Operators :

Below program demonstrate the use of logical Operators :

TASKS

1. Ask two number from user and calculate their Quotient and Remainder.