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#include <stdarg.h>
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include <unistd.h>
_syscall1(int, ctty, int, ctty);
_syscall2(ssize_t, read, void*, buf, size_t, len);
_syscall2(ssize_t, write, void*, buf, size_t, len);
int puts(char *s) {
size_t len = strlen(s);
ssize_t ret;
ret = write(s, len);
if(ret < 0)
return EOF;
return 0;
}
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;
}
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