Introduction
I have used Code::blocks 12 compiler for debugging purpose. But you can use any C programming language compiler as per your availability.
Write C program to change the value of constant integer using pointers
#include <stdio.h>
int main()
{
const int a=20; //declare and assign constant integer
int *p; //declare integer pointer
p=&a; //assign address into pointer p
printf("Before changing - value of a: %d",a);
//assign value using pointer
*p=40;
printf("\nAfter changing - value of a: %d",a);
printf("\nValue has changed.");
return 0;
}
Result
