#include <stdarg.h>
#include <stdio.h>
#include <unistd.h>

_syscall1(int, puts, char*, s);
_syscall1(int, ctty, int, ctty);

int printf(char *fmt, ...) {
  int ret;
  char buf[1024];
  va_list ap;

  va_start(ap, fmt);
  ret = vsprintf(buf, fmt, ap);
  va_end(ap);

  puts(buf);
  return ret;
}

int sprintf(char *str, char *fmt, ...) {
  int ret;
  va_list ap;

  va_start(ap, fmt);
  ret = vsprintf(str, fmt, ap);
  va_end(ap);

  return ret;
}