SIMPLE INTEREST IN C++

#include <iostream>
using namespace std;

int main ()
{
    float p, t, r;
    float si;

//IF YOU WANT YOU ARE NOT TAKING INPUT FROM USER SO YOU DICLARE VARIABLE LIKE int a=25;


    cout<<"PLEASE ENTER PRINCIPLE : ";
    cin>>p; //FOR TAKING INPUT FROM USER

    cout<<"PLEASE ENTER INTEREST : ";
    cin>>r; //FOR TAKING INPUT FROM USER

    cout<<"PLEASE ENTER TIME : ";
    cin>>t; //FOR TAKING INPUT FROM USER

    si = (p*r*t)/100 ;

    cout<<"THE SIMPLE INTEREST IS : "<<si<<endl;

    return 0;
}

OUTPUT