randFun

/*******************************************************************************************
* Author:                                   Jared Hughes
* Date Created:                             10/30/2014
* Last Modification Date:                   10/30/2014
* Filename:                                 randFun.cpp
*
* Overview:
*       This program will display a single random number to a user from a
*       range.  The range will be decided by the user.  The data will be
*       validated to be only integers as well as confirming the range is legal
*
* Input:
*       Input will be two integers given by the user.  One low end and one high end.
*       These numbers will be validated as integers and validated to make sure the low
*       end is less than the high end.
*
* Output:
*       The final output of this program will be a single interger displayed to the user
*       between the range of min and max.
*
*
*********************************************************************************************/

#include <iostream>
#include <ctime>
#include <cstdlib>
using namespace std;


void rand_int(const int &min, const int &max, int &val);        //Function to be called later - random number generator

int main ()
{

    srand(time(0));

    int maximum;                //Max range of random number generator
    int minimum;                //Minimum range of random number generator
    int value;                  //value returned from rand_int()

    cout << "This is a random number generator\n";
    cout << "Please input the first interger as your minimum: ";

    while (!(cin >> minimum))
    {
        cin.clear();
        cin.ignore(1000, '\n');
        cout << "Please make sure your minimum input is an integer.\n";
        cout << "Please input the first interger as your minimum: ";
    }

    cout << "Please input the second integer as your maximum: ";

    while(!(cin >> maximum))
    {
        cin.clear();
        cin.ignore(1000, '\n');
        cout << "Please make sure your maximum input is an integer.\n";
        cout << "Please input the second integer as your maximum: ";
    }

    while(minimum >= maximum)
    {
        cout << "Please make sure your minimum is less than your maximum\n";
        cout << "Please input the first interger as your minimum: ";

        while (!(cin >> minimum))
        {
            cin.clear();
            cin.ignore(1000, '\n');
            cout << "Please make sure your minimum input is an integer.\n";
            cout << "Please input the first interger as your minimum: ";
        }

        cout << "Please input the second integer as your maximum: ";

        while(!(cin >> maximum))
        {
            cin.clear();
            cin.ignore(1000, '\n');
            cout << "Please make sure your maximum input is an integer.\n";
            cout << "Please input the second integer as your maximum: ";
        }
    }

    rand_int(minimum, maximum, value);

    cout << "Your randomly generated integer between " << minimum << " and " << maximum << " is " << value << "." << endl;

    return 0;
}


/*******************************************************
* Function to pull in two user input integers as range *
* min and max, will output a single random number      *
* within that range.  Will return that value to main   *
*******************************************************/

void rand_int(const int &min, const int &max, int &val)
{
    int range;                  //Numbers in the calculated range;

    range = max - min + 1;
    val = (rand() % range) + min;
}