Biker’s Trip Odometer
#include<stdio.h>
int main(){
double a,c;
int b;
int count=0;
double p=3.1415927;
while(scanf("%lf%d%lf",&a,&b,&c)!=EOF && b!=0){
double dis=a/5280/12*p*b;
double speed=dis/c*60*60;
count++;
printf("Trip #%d: %.2lf %.2lf\n",count,dis,speed);
}
return 0;
}
把pi写成3.1415926....弄半天