Simple Interest in c++

#include<iostream>
#include<conio.h>
using namespace std;
int main()
{
        double p,t,r,SI;
        cout<<"Enter Inverted Amount, Time and Interest Rate\n";
        cin>>p>>t>>r;
        SI=(p*t*r)/100;
        cout<<"Simple Interest : "<<SI;;
        getch();
        return 0;
}

Output