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C: 4. Operators

 

An operator is a symbol that tells the compiler to perform specific mathematical or logical functions. It tells the computer to perform some mathematical or logical manipulations. Such as + is an arithmetic operator used to add two integers.

C language provides a rich set of operators. Operators are classified into the following categories based on their usage:-

Arithmetic Operators

Let's Suppose A holds 10 and variable B holds 20 then −

OperatorDescriptionExample
+Adds two operands.A + B = 30
−Subtracts second operand from the first.A − B = -10
*Multiplies both operands.A * B = 200
/Divides numerator by de-numerator.B / A = 2
%Modulus Operator and the remainder of after an integer division.B % A = 0
++The increment operator increases the integer value by one.A++ = 11
 --Decrement operator decreases the integer value by one. A-- = 9

Relational Operators
Let's Suppose variable A holds 10 and variable B holds 20 then −

OperatorDescriptionExample
==Checks if the values of two operands are equal or not. If yes, then the condition becomes true.(A == B) is not true.
!=Checks if the values of two operands are equal or not. If the values are not equal, then the condition becomes true.(A != B) is true.
>Checks if the value of the left operand is greater than the value of the right operand. If yes, then the condition becomes true.(A > B) is not true.
<Checks if the value of the left operand is less than the value of the right operand. If yes, then the condition becomes true.(A < B) is true.
>=Checks if the value of the left operand is greater than or equal to the value of the right operand. If yes, then the condition becomes true.(A >= B) is not true.
<=Checks if the value of the left operand is less than or equal to the value of the right operand. If yes, then the condition becomes true.(A <= B) is true.
Logical Operators
Let's Suppose variable A holds 1 and variable B holds 0, then −

OperatorDescriptionExample
&&Called Logical AND operator. If both the operands are non-zero, then the condition becomes true.(A && B) is false.
||Called Logical OR Operator. If any of the two operands is non-zero, then the condition becomes true.(A || B) is true.
!Called Logical NOT Operator. It is used to reverse the logical state of its operand. If a condition is true, then Logical NOT operator will make it false.!(A && B) is true.
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