Template header file. The order is just my experience. It is useful for small and medium projects.

template_header.h

/* * * * * * * * * * * * * * * * * * * * 
* System and Standard Library header file
* Author: DangKhoaSDC.
* * * * * * * * * * * * * * * * * * * * /
#ifndef _STANDARDLIBS
#define _STANDARDLIBS


#ifndef __cplusplus
#error "Must use C++ compiler!!"
#endif

/* Use pre-defined C/C++ compiler macros to determinate OS,
* version or architectures
* More info: http://sourceforge.net/p/predef/wiki/Home/
*/
#ifdef _WIN32
/* * * * * * * * * 
* Place for Windows
*  * * * * * * * */
#endif

#ifdef __gnu_linux__
/* * * * * * * * * 
* Place for Windows
*  * * * * * * * */

#endif

#include <iostream>
#include <string>
#include <vector>
#include <algorithm>

#include <cstdlib>
#include <cstdio>

/*
* User-defined header file
*/
#endif