6.1 Introduction to C Constants

• Constants are those variables that do not change anytime during the value program execution. 
• Whenever you declare a constant, its value remains fixed during the execution of the program. 
• If there is an attempt to change its value then there is an error in the program.
• Constants in C language are of two types.

1. Constant Literals
2. Constant Variables

❖ These two types of constants are being explained in detail.