#include "stdafx.h"
#include <iostream>

using namespace::std;


void main()
{
    int getNumOfPeople();
    int getNumOfPizzas(int);
    int getLeftovers(int, int);


    int numOfPeople = getNumOfPeople();
    int numOfPizzas = getNumOfPizzas(numOfPeople);
    int numOfLeftovers = getLeftovers(numOfPeople, numOfPizzas);

    cout  << "You'll have " << numOfLeftovers << " pieces of pizza left!" << endl;
}

int getNumOfPeople()
{
    cout << "How many people will be attending your pizza party?: ";
    int numOfPeople;
    cin >> numOfPeople;
    return numOfPeople;
}

int getNumOfPizzas(int numOfPeople)
{
    return ceil(numOfPeople * 3.0f / 8.0f);
}

int getLeftovers(int numOfPeople, int numOfPizza)
{
    return ((8 * numOfPizza) - (3 * numOfPeople));
}