摘要：
http://acm.hdu.edu.cn/showproblem.php?pid=1038简单题，关键是读懂题；View Code #include"iostream"#define Pi 3.1415927using namespace std;int main(){ double d,c,t; double sum ,v; int j=0; while(scanf("%lf%lf%lf",&d,&c,&t)!=EOF) { if(c==0) break; sum=(Pi*d*c)/(12*5280); v=1.0*(sum* 阅读全文