C Program for Addition and Multiplication by 2 Using Bitwise Operations

Bitwise operators operate on bits (i.e. on binary values of on operand)

Example

Following is the C program for addition and multiplication by 2 with the help of bitwise operators −

 Live Demo

#include<stdio.h>
main(){
   int a;
   printf("Enter a
");
   scanf("%d",&a);
   printf("%d*2=%d 
",a,a<<1);
   printf("%d/2=%d 
",a,a>>1);
}

Output

When the above program is executed, it produces the following output −

Run 1:
Enter a
45
45*2=90
45/2=22
Run 2:
Enter a
65
65*2=130
65/2=32