C---Callback function use

Simply implement the callback function in C:

#include "stdafx.h"

//define the callback function
void PrintfText()
{
    printf("Hello World!\n");
}

//Define the "calling function" that implements the callback function
void CallPrintfText(void (*callFuc)())
{
    callFuc();
}

//implement function callback
int _tmain(int argc, _TCHAR* argv[])
{
	CallPrintfText(PrintfText);
	return 0;
}