Constants and Literals in C

Constants & Literals

Constants :

Constants are the fixed value that may not change during program execution.

Literals :

Literals are the values assigned to the constant variables.

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Constants can be any of basic data types such as int, char, float etc.

Constants can be define using const keyword or #define preprocessor.

Example

        
const int num = 25;	(using const keyword)
#define PIE 3.14    (using #define preprocessor)