vscanf.c

从iccavr7中破解得到的lib库源代码

#include <stdarg.h>
#include <stdio.h>
#include "_stdio.h"

static char c;

static char _geti(void)
	{
	char v;

	if (c)
		{
		v = c;
		c = 0;
		}
	else
		v = getchar();
	return v;
	}

static void _ungeti(char v)
	{
	c = v;
	}

int vscanf(const char *fmt, va_list va)
	{
	int n;

	c = 0;
	n = _scanf(_geti, _ungeti, fmt, va);
	return n;
	}