Introduction
I have used Code::blocks 12 compiler for debugging purpose. But you can use any C programming language compiler as per your availability.
#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
![Write C program to change the value of constant integer using pointers](https://techstudys.com/wp-content/uploads/2021/07/4-3.png)