anser.c

#include<stdio.h>
int main(void)
{
  int  hoge=0x00000000ffff00ff;
  long huga=0x7fffffffffffffff;
  int  a=hoge-huga;
  long b=hoge-huga;
  printf("hoge : %016x %d\n",hoge,hoge);
  printf("huga : %016lx %ld\n",huga,huga);
  printf("   a : %016x %d\n",a,a);
  printf("   b : %016lx %ld\n",b,b);
  return 0;
}