특별한 메크로

#include "stdafx.h"
#define DEBUG //주석처리하면 scanf 실행되지 않음

void main()
{
    int i=2,j=3,k=4;

	printf("%d,%d,%d\n",i,j,k);
	printf("%d\n",__LINE__);
	printf("%s\n",__FILE__);
	printf("%s\n",__TIME__);
	printf("%s\n",__TIMESTAMP__);

	#ifdef DEBUG
	//cmd
	char c;
	scanf("%c",&c);
#endif
}