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

int main(int argc, char *argv[]) {
  long int x;
  float y;
  struct { int a; int b; } z = {1,2};

  x = y;
  y = x + y;
  x = y + x;
  x = z;                // error
  x = (long int) z;     // error
  x = *(long int*)&z;   // crazy, but perfectly okay!

  printf("x = %ld (%#018lX)\n", x, x);

  return EXIT_SUCCESS;
}