Sicily 1051

大水题。。。知道diameter和revolution意思就可以了。。。保险起见还是用了强制转换。。然后用printf较易保留2位小数

// Copyright <lijiancheng> [2014]
// Sicily 1051
#include <iostream>
#include <stdio.h>

#define p 3.1415927

int count = 0;
using namespace std;

int main() {
	double diameter = 0;
	double revolution = 0;
	double times = 0;
	while (cin >> diameter >> revolution >> times && revolution != 0) {
		count++;
		double dis = (double)(p*diameter*revolution)/(double)(12*5280);
		double mph = (double)(dis*3600)/(double)times;
		printf("Trip #%d: %.2lf %.2lf\n",count, dis, mph);
	}
	return 0;
}