びるといん

int printf(char *fmt, ...){
  return 0;
}

int scanf(char *fmt, ...){
  return 0;
}

int main(){
  const int x = 1;
  scanf("%d", &x);
  printf("%p", x, &x);
  return 0;
}

$ gcc -Wall hoge.c
hoge.c: In function `main':
hoge.c:11: warning: writing into constant object (arg 2)
hoge.c:12: warning: format argument is not a pointer (arg 2)
hoge.c:12: warning: too many arguments for format