Diktat Alpro Bab 6 - Latihan No.5

#Diktat Alpro Bab 6 - Latihan No.5

Program Menghitung keliling lingkaran:
#include <cstdlib>
#include <iostream>

using namespace std;
void kel(int r){
    int hasil,phi;
    phi=3,14;
    hasil=2*phi*r;
    cout<<"Keliling lingkaran : "<<hasil<<endl;
}
int main(int argc, char *argv[])
{
    int r;
    cout<<"|=============================|\n";
    cout<<"| Program Menghitung Keliling |\n";
    cout<<"|          Lingkaran          |\n";
    cout<<"|=============================|\n";
    cout<<"Masukkan jari-jari : ";cin>>r;
    kel(r);
    system("pause");
    return 0;
}