#include <stdio.h>
#include <stdlib.h>

int main(int argc, char *argv[]) {
  int *a = malloc(sizeof(int) * 3);
  int *ta = a;
  int b = 3;
  int c = 4;

  a[0] = 1;
  a[1] = 2;
  a[2] = 3;

  
  *a = *(a++) * b;

  printf("a[-1] %d a[0] %d a[1] %d\n", a[-1], a[0], a[1] );
  printf("Shows that a++ occurs after the assignment\n\n");

  a = ta;
  a[0] = 1;
  a[1] = 2;
  a[2] = 3;

  *a = *(++a) * c;
  printf("a[-1] %d a[0] %d a[1] %d\n", a[-1], a[0], a[1] );
  printf("Shows that ++a occurs before accessing the value referenced by a\n\n");

  a = ta;
  a[0] = 1;
  a[1] = 2;
  a[2] = 3;

  *a = *(a++) * b + *(++a) * c;

  printf("a[-2] %d a[-1] %d a[0] %d a[1] %d a[2] %d\n", a[-2], a[-1], a[0], a[1], a[2]);
  printf("Shows that the first access to a is before any modification\n");
  printf("  the second access to a is after ++a\n");
  printf("  the assignment takes place before the post-increment\n\n");

  return(0);
}