Constants In C Language | Constants In C Language In Hindi

Constants In C Language

If you want to define a variable whose value cannot change, you can use the const keyword. This will create a constant.

Fig: Constant In c 

For Example

Const double PI=3.14;

We have added keyword const.

And here, PI is a symbolic constant; its values cannot be changed.

Const double PI=3.14;

PI=2.9; //Error

Program of Constant

#include<stdio.h>

int main()

{

Const float  PI=3.14;

PI=3.4;

Printf(“the value of PI is %f”,PI);

return 0;

}

Output:

Compile time error: cannot modify const object.