Constants in C

Categories: C language

A constant is a value or variable that can't be changed in the program, for example: 10, 20, 'a', 3.4, "c programming" etc.

There are different types of constants in C programming.

List of Constants in C

ConstantExample

Decimal Constant10, 20, 450 etc.

Real or Floating-point Constant10.3, 20.2, 450.6 etc.

Octal Constant021, 033, 046 etc.

Hexadecimal Constant0x2a, 0x7b, 0xaa etc.

Character Constant'a', 'b', 'x' etc.

String Constant"c", "c program", "c in javatpoint" etc.



2 ways to define constant in C

There are two ways to define constant in C programming.

const keyword

#define preprocessor

1) C const keyword

The const keyword is used to define constant in C programming.




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