DIKTAT BAB 3 NO 2 C++

#include <iostream>
using namespace std;
/* run this program using the console pauser or add your own getch, system("pause") or input loop */

int main(int argc, char** argv) {
    int r;
    float phi=3.14;
    float hasil;
    cout<<"Masukan jari-jari : ";cin>>r;
    hasil=4*phi*r*r*r/3;
    cout<<"Volume Bola : "<<hasil;
    return 0;
}