POJ第一天

今晚刷了几道水题：

poj1003

poj1004

poj1005

而1006不知道哪里有错

 

 

POJ1003

#include <iostream>using namespace std;int main(){ double a,b; int ans; cin>>a; while(a!=0.00) { b=0.5; ans=2; while(b<a){ans++;b+=1.0/ans;} cout<<ans-1<<" card(s)"<<endl; cin>>a; } return 0;}

POJ1004

#include <iostream>#include <iomanip>using namespace std;int main(){ double a=0,b; cout.setf(ios::fixed); cout.precision(2); for(int i=1;i<=12;i++){cin>>b;a+=b/12;} cout<<"$"<<a<<endl; return 0;}

POJ1005

#include <iostream>#include <cmath>using namespace std;int main(){ const double pi=3.1415926; int n,i; double x,y; cin>>n; for(i=1;i<=n;i++) { cin>>x>>y; cout<<"Property "<<i<<": This property will begin eroding in year "<<floor(pi*(x*x+y*y)/100)+1<<"."<<endl; } cout<<"END OF OUTPUT."<<endl; return 0;}

cout格式化输出：http://hi.baidu.com/czlaner/blog/item/b8544f381f64172db8998fdf.html