Operators in C

What is Operators?

An operator is a symbol that operates on a value or a variable. For example: + is an operator to perform addition.

Types of Operators:

1. Arithmetic Operators
2. Increment and Decrement Operators
3. Assignment Operators
4. Relational/ Comparison Operators
5. Logical Operators
6. Bitwise Operators
7. Comma Operator
8. The sizeof operator

C Arithmetic Operators

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

Operator	Meaning of Operator
+	addition or unary plus
–	subtraction or unary minus
*	multiplication
/	division
%	remainder after division (modulo division)

Example 1: Arithmetic Operators

#include <stdio.h>
void main()
{
    int a = 9,b = 4, c;
    // Working of arithmetic operators    
    c = a+b;
    printf("a+b = %d \n",c);
    c = a-b;
    printf("a-b = %d \n",c);
    c = a*b;
    printf("a*b = %d \n",c);
    c = a/b;
    printf("a/b = %d \n",c);
    c = a%b;
    printf("Remainder when a divided by b = %d \n",c);
    
}

Output

a+b = 13
a-b = 5
a*b = 36
a/b = 2
Remainder when a divided by b=1

Suppose a = 5.0, b = 2.0, c = 5 and d = 2. Then in C programming,

// Either one of the operands is a floating-point number
a/b = 2.5  
a/d = 2.5  
c/b = 2.5  

// Both operands are integers
c/d = 2