C operators are symbols that are used to perform mathematical or logical manipulations. The C programming language is rich with built-in operators. Operators take part in a program for manipulating data and variables and form a part of the mathematical or logical expressions.
An operator is a symbol that operates on a value or a variable. For example: is an operator to perform addition.
C Arithmetic Operators
An arithmetic operator performs mathematical operations such as addition, subtraction, multiplication, division etc on numerical values (constants and variables).
C Increment and Decrement Operators
C programming has two operators increment and decrement -- to change the value of an operand (constant or variable) by 1.
Increment increases the value by 1 whereas decrement -- decreases the value by 1. These two operators are unary operators, meaning they only operate on a single operand.