Logical operators in C Language:
 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 (!).
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Operators

Name

Example

Description

1

&&

logical AND

(x>5)&&(y<5)

It returns true when both conditions are true

2



logical OR

(x>=10)(y>=10)

It returns true when atleast one of the condition is true

3

!

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 Language:
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. This value is inverted by “!” operator.
 So, “! (m>n and m! =0)” returns false (0).
Continue on types of C language operators:
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Types of Operators

Description

1
 Arithmetic_operators  These are used to perform mathematical calculations like addition, subtraction, multiplication, division and modulus 
2
 Assignment_operators  These are used to assign the values for the variables in C programs. 
3
 Relational operators  These operators are used to compare the value of two variables. 
4
 Logical operators  These operators are used to perform logical operations on the given two variables. 
5
 Bit wise operators  These operators are used to perform bit operations on given two variables. 
6
 Conditional (ternary) operators  Conditional operators return one value if condition is true and returns another value is condition is false. 
7
 Increment / decrement operators  These operators are used to either increase or decrease the value of the variable by one. 
8
 Special operators  &, *, sizeof( ) and ternary operators 
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