//?Progression.cpp?:?Defines?the?entry?point?for?the?console?application.
//

#include?“stdafx.h“

int?main（）
{
	int?nt;							//定義變量n，t為基本整型
	float?a=2b=1sum=0;				//定義變量a，b，sum單精度型并分別賦初值2，1，0
	for?（n=1;n<=20;n++）					//for循環(huán)變量n的范圍從1到20
	{
		sum=sum+a/b;					//累加求和
		t=a;a=a+b;b=t;					//借助中間變量t完成后一個(gè)分?jǐn)?shù)與前一個(gè)分?jǐn)?shù)間數(shù)值間的轉(zhuǎn)換
	}
	printf（“╔═════════════════╗\n“）;
	printf（“║??????????????????????????????????║\n“）;
	printf（“║??????數(shù)列前20項(xiàng)之和：%0.2f???????║\n“sum?）;//將最終所求的和sum輸出
	printf（“║??????????????????????????????????║\n“）;
	printf（“╚═════════════════╝\n“）;
	return?0;
}

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----
?????文件?????????720??2010-08-23?18:06??Progression\Progression.cpp
?????文件????????4596??2010-08-23?18:00??Progression\Progression.dsp
?????文件?????????547??2010-08-23?18:00??Progression\Progression.dsw
?????文件?????????298??2010-08-23?18:00??Progression\StdAfx.cpp
?????文件?????????769??2010-08-23?18:00??Progression\StdAfx.h