uvaoj 694 - The Collatz Sequence

/*刘哥啊你可把我害惨了啊你口口声声提醒要用long long 型我就傻傻的用long long 啊有木有！ C语言%lld要加stdlib读-1还老出错啊有木有！ c语言过不了再用C++才发现原来cin不支持long long 型啊！！！有木有！ 后来实在纠结就百度了一下原来人家用的是double啊有木有！ 什么浮点误差啊都被人家当成了浮云啊，有木有！！！ 有木有！！！！！！！！！ */#define LOCAL    #include<iostream>#include<iomanip>#include<cmath>using namespace std;int main(){#ifdef LOCAL       freopen("input.txt","r",stdin);       freopen("output.txt","w",stdout);#endif        double n,limit,a;    long c=1,term;    while(1)    {         cin>>n>>limit;         a=n;         if(n==-1&&limit==-1) return 0;         term=1;         while(n!=1&&n<=limit)         {                if(fmod(n,2)==0) n=n/2;                else n=3*n+1;                if(n>limit)                break;                term++;                                }         cout<<"Case "<<setiosflags(ios::fixed) << setprecision(0)<<    //别忘了设置精度，不然会出错滴          c++<<": A = "<<setiosflags(ios::fixed) << setprecision(0)<<         a<<", limit = "<<setiosflags(ios::fixed) << setprecision(0)<<         limit<<", number of terms = "<<setiosflags(ios::fixed) << setprecision(0)<<         term<<endl;    }    return 0;}