#include <stdio.h>

/*
 * This is our modified "hello world"
 * including the example we used to crash the program
 * and the example with the pointer to pointer.
 */
int main() {

  // Crashing the program by accessing a random location in memory
  // Uncomment the lines below to give it a try
  //int *pointer_crash;
  //pointer_crash = 55555;
  //printf("Value inside pointer_crash is %p\n", pointer_crash);
  //printf("Value at address given by pointer_crash is %d\n", *pointer_crash);

  // Experimenting with a pointer to a pointer
  int i = 3;
  int *pointer;
  pointer = &i;

  int **pointer_to_pointer;
  pointer_to_pointer = &pointer;

  printf("Test0: %p\n", pointer_to_pointer);
  printf("Test1: %p\n", *pointer_to_pointer);
  printf("Test2: %p\n", pointer);

  printf("Test3: %d\n", **pointer_to_pointer);
  printf("Test4 %d\n", *pointer);

  // Let's write "hello world" to stdout
  printf("Hello World\n");

  // Return 0 to indicate successful execution
  return 0;

}