套路
#include<stdio.h>
#include <iostream>
#include <iomanip>
using namespace std;
int main()
{
double r, PI=3.1415927;
while (cin >> r)
{
double v = 4*PI*r*r*r/3;
cout << setiosflags(ios::fixed) << setprecision(3) <<v << endl;
}
return 0;
}
套路
#include<stdio.h>
#include <iostream>
#include <iomanip>
using namespace std;
int main()
{
double r, PI=3.1415927;
while (cin >> r)
{
double v = 4*PI*r*r*r/3;
cout << setiosflags(ios::fixed) << setprecision(3) <<v << endl;
}
return 0;
}