Simple Logger

build.bat

@echo off

IF NOT EXIST bin mkdir bin
IF NOT EXIST bin-int mkdir bin-int

pushd bin-int

cl ..\main.cpp ..\Log.cpp /c /Wall /wd4189
cl main.obj Log.obj /link /out:main.exe

popd

move bin-int\main.exe bin\main.exe

Log.cpp

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

#include "Log.h"

void LogInternal(const char *file, int line, const char *format, ...)
{
    printf("'%s' Line: %d\n", file, line);
    printf("\t");
    va_list argptr;
    va_start(argptr, format);
    vprintf(format, argptr);
    va_end(argptr);
}

Log.h

#pragma once

#define Log(str, ...) LogInternal(__FILE__, __LINE__, str, __VA_ARGS__)

void LogInternal(const char *file, int line, const char *format, ...);

main.cpp

#include <stdio.h>
#include <stdlib.h>
#include <time.h>

#include "Log.h"

int main()
{
#ifdef WINDOWS
    Log("This is a log. Here is a number %d", 10);
#endif

    int myVariable = 30.0f;

    return 0;
}