Operators in C

Arithmetic Operators
Operator	Description	Example
+	To add two numeric values	a+b
-	Used for subtraction	a-b
*	To multiply two numeric values	a*b
/	Used for division	a/b
% (Modulo operator)	To compute the remainder of a division operation	a%b

Notes

• An arithmetic operation on two integer values always yields an integer result.
• Operation between float and float yields a float result.
• Operation on integer and a float value will results a float result
  
• % operator cannot be used with float or double values

Relational Operators
Operator	Use	Description
>	a>b	Expression return true if a is greater than b
>=	a>=b	True if a is greater than or equal to b
<	a	True if a is less than b
<=	a<=b	True if a is less than or equal to b
==	a==b	True if a is equal to b
!=	a==b	True if a and b are not equal

Notes

• Relational operators are comparison operators which will compare two values and will return true or false.
• Relational operators are used in conditional expressions.
• == is an relational operator to check the equality of two values, but a single = operator is assignment operator.

Logical Operators
Operator	Meaning	Description
&&	Logical AND	Combine to conditional expressions, and will return true if both conditional expressions are true otherwise it will return false.
||	Logical OR	Combine to conditional expressions, and will return false if both conditional expressions are false otherwise it will return true.
!	Logical NOT	Negate a conditional expression

Notes

• Logical AND operator is used to combine two conditions, and the whole expression that is connected by the AND (&&) operator will return only true if both conditions are true, otherwise it will return false.
• Logical OR operator is used to combine two conditions, and the whole expression that is connected by the OR (||) operator will return true if any one condition is true, otherwise it will return false.
• Logical NOT operator is used to negate the conditional value, if a condition 'CON' yields a true then !CON will return false, if condition CON is false then !CON will return true.