# C Operators : Operator in C Programming Language

Operators are fundamental tools that are used to perform mathematical and logical operations.

Two terms we often come across while performing mathematical operations are:

Operand : An operand can be a variable or value or a result of function.

Operators : An operator can be defined as the operation that is to be performed on/between operands. Each operator’s functionality defers from each other.

### Types of C Operators

 Type List of operators Arithmetic Operators + , – , * , / , % Relational Operators == , != , <= , >= , < , > Logical Operators ! , && , || Assignment Operators = , += , -= , *= , /= , %= Conditional/Ternary Operator ?: Bitwise Operators & , | , << , >> , ^ , ~ Increment/Decrement Operators — , ++ Special Operators *var_name(pointer) , &var_name(reference) , sizeof

### 1. Arithmetic Operators in C

 Operator Operand Operation Functionality + a,b Addition a+b ; adds two operands – a,b Subtraction a-b ; subtracts one operand from another * a,b Multiplication a*b ; multiplies two operands / a,b Division a/b ; generates the quotient when two operands are divided % a,b Modulus a%b ; generates the remainder when two operands are divided

### 2. Relational Operators in C

 Operator Operation Functionality == Equal to Checks whether two operands are equal != Not equal to Checks whether two operands are not equal <= Lesser than equal to Checks if one operand is lesser than or equals to another >= Greater than equal to Checks if one operand is greater than or equals to another < Lesser than Checks if one operand is lesser than another > Greater than Checks if one operand is greater than another

### 3. Logical Operators in C

There are two types of Logical operators:

• Unary operators: works with one operand
• Binary operators: works with two operands
 Operator Operand Operation Functionality ! a Unary not !a ; Returns negation on a constant or variable && a,b Binary and a&&b ; checks whether both the operands are true or not || a,b Binary or a||b ; checks whether either of the operands are true or not

### 4. Assignment Operators in C

 Operator Operand Operation Functionality = a,b Assignment a=b ; assigns value from right operand to left operand += a,b Addition assignment a+=b ; adds both operands and stores result in left operand -= a,b Subtraction assignment a-=b ; subtracts one from another operand and stores result in left operand *= a,b Multiplication assignment a*=b ; multiplies both operands and stores result in left operand /= a,b Division assignment a/=b ; stores quotient in left operand upon division of both operands %= a,b Modulus assignment a%=b ; stores remainder in left operand upon division of both operands

### 5. Conditional/Ternary Operator in C

Conditional operator is used in place of an if-else statement.

 Syntax Var_name = (condition) ? True_val : False_val Example a = ( b > c ) ? 1 : 0 Functionality If given condition is true returns the true value else returns false value

### 6. Bitwise Operator in C

 Operator Operand Operation Functionality & a,b Bitwise and a&b ; Returns decimal number upon performing AND operation on each bit of operand against each other (if both bits are 1 returns 1 else 0) | a,b Bitwise or a|b ; Returns decimal number upon performing OR operation on each bit of operand against each other (if either of the bit is 1 return 1 else 0) << a,b Bitwise left shift a<> a,b Bitwise right shift a<

### 7. Increment/Decrement Operators in C

 Operator Operation Syntax Functionality ++ Pre- increment Post-increment b = ++a b = a++ Increment operand by 1 before assigning it to b. Increment operand by 1 after assigning it to b. — Pre- decrement Post-decrement b = –a b = a– decrement operand by 1 before assigning it to b. decrement operand by 1 after assigning it to b.

### 8. Special Operators in C

1. *var_name (pointer): it stores the address of a variable.
2. &var_name (reference): it points to the address of existing variable providing a copy/alias of original data.
3. Sizeof: returns size of the variable.

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