Constants

                     Constants in C refer to fixed values that do not change during the execution of a program.

const:

                    It is a keyword and is used to declare constants.

Syntax:

                 const datatype identifier=value;

                                        (or)

                const datatype identifier-1=value,.........,identifier-n=value;

Eg:

                  const int a=100;

                  const int x=10, y=20, z=30;

Example:

Program:

#include<stdio.h>

#include<conio.h>

void main()

{

    const int n=100;

    clrscr();

    printf(" The given Constant Value  is            : %d", a);

    //n=100;

    printf("\nThe Change of Constant Value  is  : %d", a);

    getch();

}

Output:

The given Constant Value  is  : 100

The Change of Constant Value  is  : 100

                In the above program we given n=100, we will get an error can't modify a constant object.

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