Changing the value of a pointer via the Dereference[Indirection] operator.

change_via_indirection.c

#include <stdio.h>

int main(){
  int x = 5; // Value x
  int* xPtr= &x; // A pointer to x

  *xPtr = 6; // Change value via indirection operator

  printf("The value of x is: %d\n", x); // x = 6
  return 0;
}