Operators and Expressions 

An operator specifies an operation to be performed that yields a value. The variables, constants can be joined by various operators to form an expression. An operand is a data item on which an operator acts. Some operators require two operands, while others act upon only one operand. C includes a large number of operators that fall under several different categories, which are as.

1. Arithmetic operators

 2. Assignment operators .

 3. Increment and Decrement operators 

4. Relational operators. 

5. Logical operators 

6. Conditional operator 

7. Comma operator 

8. size of operator

 9. Bitwise operators 

10. Other operators