/*
   testfunc09.cpp
   CIS 150
   6/9/2005
   David Klick
   
   This program demonstrates function overloading.
*/

#include <iostream>
using std::cout;
using std::cin;

int getInt();
int getInt(char* prompt);
int getInt(char* prompt, int min, int max);

int main(void) {
   cout << "You entered: " << getInt() << '\n';
   cout << "You entered: " << getInt("Enter an integer: ") << '\n';
   cout << "You entered: " << getInt("Enter an integer (10-20): ", 10, 20) << '\n';
   return 0;
}

/*
   Prompts user for integer and returns value entered.
*/
int getInt() {
   int num;
   cout << "Please enter an integer: ";
   cin >> num;
   return num;
}

/*
   Prompts user for integer and returns value entered.
*/
int getInt(char* msg) {
   int num;
   cout << msg;
   cin >> num;
   return num;
}

/*
   Prompts user for integer, does data validation,
   and returns value entered.
*/
int getInt(char* msg, int min, int max) {
   int num;
   do {
      cout << msg;
      cin >> num;
      if (num < min) cout << "Error: value below minimum allowed\n";
      else if (num > max) cout << "Error: value above maximum allowed\n";
   } while (num<min || num>max);
   return num;
}

/*
   Sample output:
   
   Please enter an integer: -30
   You entered: -30
   Enter an integer: -30
   You entered: -30
   Enter an integer (10-20): -30
   Error: value below minimum allowed
   Enter an integer (10-20): 100
   Error: value above maximum allowed
   Enter an integer (10-20): 17
   You entered: 17
*/