Logical Operators in C Programming

There are three logical operators in C language. Assume variable A and B holds 1 and 0 respectively then –

Operator	Description	Example
&&	AND operator (the condition becomes true if both the operands are non-zero)	(A && B) is false.
\|\|	OR Operator (the condition becomes true if any of the two operands is non-zero)	(A \|\| B) is true.
!	NOT Operator (this operator reverse the logical state of operand. For example: If condition is true, then NOT operator will make it false)	!(A && B) is true.

Example: Check both numbers are greater the 10 or not

#include < stdio.h >
  int main() {
    int a, b, big;
    a = 20;
    b = 20;
    if (a > 10 && b > 10) // if condition is true move inside if-statement
    {
      printf("a and b both are greater then 10");
    }
    return 0;
  }

#include < stdio.h >

int main() {

int a, b, big;

a = 20;

b = 20;

if (a > 10 && b > 10) // if condition is true move inside if-statement

{

printf("a and b both are greater then 10");

}

return 0;

}

Output

  a and b both are greater then 10

1	a and b both are greater then 10

Example: Check both numbers are greater the 10 or not. Also check any one number is greater then 10 or not

#include<stdio.h>
int main() {
  int a, b, big;
  a = 20;
  b = 5;
  if (a >10 && b>10) // if condition is false
 {
  printf("a and b both are greater then 10");
}
 if (a >10 || b>10) // if condition is true move inside if-statement
 {
  printf("Either a or  b is greater then 10");
}
  return 0;
}</stdio.h>

#include<stdio.h>

int main() {

int a, b, big;

a = 20;

b = 5;

if (a >10 && b>10) // if condition is false

{

printf("a and b both are greater then 10");

}

if (a >10 || b>10) // if condition is true move inside if-statement

{

printf("Either a or b is greater then 10");

}

return 0;

}</stdio.h>

Output

  Either a or b is greater then 10

1	Either a or b is greater then 10