LOGICAL OPERATORS IN C:

• These operators are used to perform logical operations on the given expressions.
• There are 3 logical operators in C language. They are, logical AND (&&), logical OR (||) and logical NOT (!).

Operators	Example/Description
&& (logical AND)	(x>5)&&(y<5) It returns true when both conditions are true
|| (logical OR)	(x>=10)||(y>=10) It returns true when at-least one of the condition is true
! (logical NOT)	!((x>5)&&(y<5)) It reverses the state of the operand “((x>5) && (y<5))” If “((x>5) && (y<5))” is true, logical NOT operator makes it false

EXAMPLE PROGRAM FOR LOGICAL OPERATORS IN C:

C

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#include <stdio.h>   int main() {    int m=40,n=20;    int o=20,p=30;    if (m>n && m !=0)    {       printf("&& Operator : Both conditions are true\n");    }    if (o>p || p!=20)    {       printf("|| Operator : Only one condition is true\n");    }    if (!(m>n && m !=0))    {       printf("! Operator : Both conditions are true\n");    }    else    {       printf("! Operator : Both conditions are true. " \       "But, status is inverted as false\n");    } }

OUTPUT:

&& Operator : Both conditions are true || Operator : Only one condition is true ! Operator: Both conditions are true. But, status is inverted as false

• In this program, operators (&&, || and !) are used to perform logical operations on the given expressions.
• && operator – “if clause” becomes true only when both conditions (m>n and m! =0) is true. Else, it becomes false.
• || Operator – “if clause” becomes true when any one of the condition (o>p || p!=20) is true. It becomes false when none of the condition is true.
• ! Operator  – It is used to reverses the state of the operand.
• If the conditions (m>n && m!=0) is true, true (1) is returned. Thi
• s value is inverted by “!” operator.
• So, “! (m>n and m! =0)” returns false (0).