#include <stdio.h>#include <stdarg.h>#include <errno.h> #include "ioprivate.h"  int vfprintf(FILE *f, const char *fmt, va_list ap){	return vprintfmt((void*)fputc, f, fmt, ap);} int fprintf(FILE *f, const char *fmt, ...){	va_list ap;	va_start(ap, fmt);	int rc = vfprintf(f, fmt, ap);	va_end(ap);	return rc;} int vprintf(const char *fmt, va_list ap){	return vfprintf(stdout, fmt, ap);} int printf(const char *fmt, ...){	va_list ap;	va_start(ap, fmt);	int rc = vfprintf(stdout, fmt, ap);	va_end(ap);	return rc;}