Difference between revisions of "Bitwise Operators"

Bitwise AND, OR, EXOR[edit]

<syntaxhighlight lang="c" name="bitwise">

1. include<stdio.h>

int main() {

   int a;
   printf("Enter a number\n");
   scanf("%d", &a);
   printf("The third bit (from right) of  %d  is made 0  and we get %d\n", a, a& (-1<<3 | 11)); // -1 has all bits 1, so -1<<3 will have the rightmost 3 bits 0 and rest 1, and -1<<3 | 11 will have the 3rd bit from right as 0 and all other bits 1 

} </syntaxhighlight>

Bitwise NOT[edit]

<syntaxhighlight lang="c" name="bitwisenot">

1. include<stdio.h>

int main() {

   unsigned int a;
   printf("Enter a number\n");
   scanf("%u", &a);
   printf("Negation of %u is %u\n", a, ~a); //~a will have all bits of a inverted (0's become 1 and 1's become 0)

} </syntaxhighlight>

Left Shift[edit]

<syntaxhighlight lang="c" name="leftshift">

1. include<stdio.h>

int main() {

   int a, b;
   printf("Enter a number and a power of 2\n");
   scanf("%d %d", &a, &b);
   printf("%d multiplied by %d is\n", a, a << b); //<< is usually preferred to * 

} </syntaxhighlight>

Right Shift[edit]

<syntaxhighlight lang="c" name="rightshift">

1. include<stdio.h>

int main() {

   int a, b;
   printf("Enter a number and a power of 2\n");
   scanf("%d %d", &a, &b);
   printf("%d divided by %d is\n", a, a >> b); //>> is usually preferred to * 

} </syntaxhighlight>