Programming in C, const qualifier

Question1: Explain what is const qualifier?

Ans: The const qualifier is used with a data type of declaration to specify a constant value.

Some examples of const qualifiers are:

Const int COUNT=5;

Const float PI=3.14;

The same thing can also be achieved using #define preprocessor as given below.

#define COUNT 5

#define PI 3.14

In most of the situations there is no difference between using define or const qualifier. The only difference is define is a preprocessor directive that simply replaces a symbol with a constant value throughout the program.

The const qualifier declares a variable type and assigns it a constant value. It has advantage at advance level of programming in C language.

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