Arithmetic Operators in C

The following table shows all the arithmetic operators supported by the C language. Assume variable A holds 10 and variable B holds 20, then −

Operator	Description	Example
+	Adds two operands.	A + B = 30
−	Subtracts second operand from the first.	A − B = -10
*	Multiplies both operands.	A * B = 200
/	Divides numerator by de-numerator.	B / A = 2
%	Modulus Operator and remainder of after an integer division.	B % A = 0
++	Increment operator increases the integer value by one.	A++ = 11
--	Decrement operator decreases the integer value by one.	A-- = 9

Example

Try the following example to understand all the arithmetic operators available in C −

#include <stdio.h

main() {

   int a = 21;
   int b = 10;
   int c ;

   c = a + b;
   printf("Line 1 - Value of c is %d\n", c );
 
   c = a - b;
   printf("Line 2 - Value of c is %d\n", c );
 
   c = a * b;
   printf("Line 3 - Value of c is %d\n", c );
 
   c = a / b;
   printf("Line 4 - Value of c is %d\n", c );
 
   c = a % b;
   printf("Line 5 - Value of c is %d\n", c );
 
   c = a++; 
   printf("Line 6 - Value of c is %d\n", c );
 
   c = a--; 
   printf("Line 7 - Value of c is %d\n", c );
}

When you compile and execute the above program, it produces the following result 

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