poj1665

#include <stdio.h>
#include <stdlib.h>
#define pi 3.1415926
int main()
{
    float dia,tim;
    int rev,count=0;
    while(scanf("%f%d%f",&dia,&rev,&tim)!=EOF)
    {
        float dis,MPH;
        if(rev==0)
            break;
        dis=pi*dia*rev/63360;
        tim/=3600;
        MPH=dis/tim;
        printf("Trip #%d: %.2f %.2f
",++count,dis,MPH);
    }
    return 0;;
}