Need help with creating a loop!

[rookiecoder]

Hello fellow coders!

I was wondering if someone could help me with looping the following.

I need the "deposit" to be looped with the compound interest "rate" so that it totals to the "goal".

Sample output:

Enter annual deposit amount!:
How much are you looking to save?:
Enter your rate!:

The computer gives back these results:

Your balance will be (amount)in (number of) years including earned interest!

#include <iostream>
#include <string>
#include <cmath>
using namespace std;

int main ()
{


    float deposit;
    cout << "Enter annual deposit amount!: ";
    cin >> deposit;

    float goal;
    cout << "How much are you looking to save?: ";
    cin >> goal;

    float rate;
    cout << "Enter your rate!: ";
    cin >> rate;

    float balance, comp;

    comp = deposit * (rate/100);

    balance = comp+deposit;
    cout << balance;
}

[keskiverto]

This http://www.cplusplus.com/doc/tutorial/control/
describes the loops.