Cookie Clicker Lucky Minimum Bank Amount Calculator

//This program takes your CPS and tells you how many cookies you should save up so that you get the maximum return from a lucky golden cookie.
//Candyapplecorn
#include <iostream>
#include <iomanip>
#include <cctype>
using namespace std;

void intro();
void line();
void getcps(float&);
void calcmin(float&, float);
void showmin(float);
int continu();
float fancyshowmin(float);

int main()
{
    float cps, minimum;
    intro();
    do
    {
        getcps(cps);
        if(cps==0)
            break;
        calcmin(minimum, cps);
        showmin(minimum);
    }while(cps!=0);
    return 0;
}

void showmin(float minimum)
{
    cout << fixed << setprecision(0);
    cout << "MINIMUM COOKIES: " << minimum*10 << endl;
}
void calcmin(float &minimum, float cps)
{
    minimum=cps*1200+13;
}

void getcps(float &cps)
{
    cout << "Enter your cookies per second (cps) [0 to quit]: ";
    while(!(cin>>cps))
    {
        cin >> cps;
        cin.clear();
        cin.ignore(100,'\n');
    }
}

void intro()
{
    line();
    cout << "This program calculates the amount of cookies you\nshould keep in your bank so that you get\nthe best return from a \"lucky\" golden cookie.\n";
    line();
}

void line()
{
    cout << "------------------------------------------------------\n";
}