#include<stdio.h>
int main(
void)
{
double r,h,v;
printf("Enter r,h:");
scanf("%lf%lf" ,&r,&
h);
if(r<
0,h<
0){
printf("sorry!your enter is wrong!\n");
}
else{
v=
3.1415926*r*r*
h;
printf("%.3f\n",v);
}
return 0;
}
转载于:https://www.cnblogs.com/liruijia199531/p/3367807.html
