// pgm21 Days Out Program
// this is example 13 on pg 370 in textbook
// 10/19/2016
#include <iostream>
#include <iomanip>
using namespace std;
// prototypes
int getNumEmp();
int getDaysOut(int);
double average(double, double);

int main()
{
    // get number of employees in the company
    int n, sumDays;
    n = getNumEmp();
    cout << "number of employees is: " << n << endl;
    // read in number of days out for n employees
    sumDays = getDaysOut(n);
    cout << "sum of days out is: " << sumDays << endl;
    // calculate the average number of days out
    cout << "average number of days out is: ";
    double avg = average(sumDays, n);
    cout << avg << endl;
    return 0;
}

int getNumEmp() {
// reads in the number of employees and returns it

    int numemp;
    cout << "How many employees do you have? ";
    cin >> numemp;
    // input validation: do not accept a number < 1
    while (numemp<1) {
        cout << "Enter a valid number: ";
        cin >> numemp;
    }
    return numemp;
}

int getDaysOut(int num) {
// read in days out for each employee and sum them
// return the sum
    int days, sum=0;
    for (int i=0; i<num; i++) {
        cout << "Enter number of days out: ";
        cin >> days;
        if (days<0)
            days=0;
        sum+=days;
    }
    return sum;
}

double average(double sum, double emps) {
// calculate the average number of days out and return it
     return sum/emps;
}

/* LAB:
Write a function to test whether a value is divisible
by some number that the user inputs.

in main: user enters 2 numbers: x and y
Check whether x is divible by y by calling your function.
main will print whether x is divisibly by y or not.

*/