narrowing.c

#include <stdio.h>
#include <limits.h>
#include <assert.h>

#define MAGIC_NUMBER  0xFFFF7F8F

int main(void)
{
  assert(sizeof(short)==2);

  unsigned int ui = MAGIC_NUMBER;
  unsigned short us = ui;
  unsigned char uc = us;

  int si = MAGIC_NUMBER;
  short ss = si;
  signed char sc = ss;

  printf("%10u %5hu %4hhu\n", ui, us, uc);
  printf("%10x %5hx %4hhx\n", ui, us, uc);
  printf("%10d %5hd %4hhd\n", si, ss, sc);
  printf("%10x %5hx %4hhx\n", si, ss, sc);
  return 0;
}