Logical operators in C

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:

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).

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