#include <stdio.h>
#include "__printf.h"

static void _out_file(struct __printf_backend *bk, char ch)
{
    FILE *fp = bk->arg;
    if (ch) {
        fputc(ch, fp);
    }
}

int vfprintf(FILE *fp, const char *restrict format, va_list arg)
{
    struct __printf_backend bk = {};
    bk.out = _out_file;
    bk.arg = fp;

    return __xprintf(&bk, format, arg);
}