noopt_vola.cpp

/* Compile code without optimization option */
#include <stdio.h>
int main(void) {
  const int local = 10;
  int *ptr = (int *)&local;

  printf("Initial value of local : %d \n", local);

  *ptr = 100;

  printf("Modified value of local: %d \n", local);

  return 0;
}