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Posted 12 Aug 2006

Tiny C Runtime Library

, 25 Mar 2007
Reduce code bloat for those simple utility programs by using a streamlined C runtime - now with Unicode support!
// printf.cpp

// based on:
// LIBCTINY - Matt Pietrek 2001
// MSDN Magazine, January 2001

// 08/12/06 (mv)

#include <windows.h>
#include <stdio.h>
#include <stdarg.h>
#include "libct.h"

// Force the linker to include USER32.LIB
#pragma comment(linker, "/defaultlib:user32.lib")


int printf(const char *format, ...)
    va_list args;
    va_start(args, format);
    int ret = vprintf(format, args);

	return ret;

int wprintf(const wchar_t *format, ...)
	va_list args;
	va_start(args, format);
	int ret = vwprintf(format, args);

	return ret;

int vprintf(const char *format, va_list args)
	char szBuff[1024];

	int retValue = wvsprintfA(szBuff, format, args);

	fwrite(szBuff, retValue, 1, stdout);

	return retValue;

int vwprintf(const wchar_t *format, va_list args)
	wchar_t buf[1024];
	int ret = wvsprintfW(buf, format, args);

	char ansibuf[1024];
	WideCharToMultiByte(CP_ACP, 0, buf, -1, ansibuf, sizeof(ansibuf), 0, 0);
	fwrite(ansibuf, ret, 1, stdout);

	return ret;


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About the Author

United States United States
Mike_V is currently a student at UCLA.

After a few years on the Dark Side, he reformed and now chants "Death to VB." His computer-related interests include C++, C#, and ASP.NET (in C#, of course). He writes operating systems in C++ and assembler as a hobby.

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