[公告] C++作業一

[ted7726 (小康~啦啦啦)]

#include "stdafx.h"
#include "iostream"
using std::cout;
using std::cin;

int _tmain(int argc, _TCHAR* argv[])
{
        double PI=0.0;
                double sign=1.0;
                for(int i=1; i<9999999;i=i+2)
                {
                        PI=PI+sign*1.0/i;
                        sign=sign=sign*-1.0;
                }
                PI= 4.0*PI;
                cout<<PI;
                cin.get();
        return 0;
}


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※ apple579:轉錄至看板 NTUBIME99-HW                                10/26 22:49