//用來測試gcc的-O選項
//普通編譯:gcc?-Wall?optimize.c?-o?optimize
//優化編譯:gcc?-Wall?-O?optimize.c?-o?optimize
//測試程序運行時間:time?./optimize
#include??
int?main（void）
{
	double?counter;?
	double?result;?
	double?temp;?
	for?（counter?=?0;?
		counter?		counter?+=?（5?-?1?）?/?4）
	{
		temp?=?counter?/?1239;?
		result??=?counter;????
	}??
	printf（“Result?is?%lf\n“?result）;??
	return?0;
}

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件?????????446??2007-12-11?02:53??optimize.c