/*
    InputExample.cpp
    Dave Klick
    CIS 150
    2017-02-28
    
    Demonstrates how to handle unexpected input gracefully.
*/

#include <iostream>
#include <string>
using namespace std;

int getInt(string prompt, int min, int max);

int main() {
    int n = getInt("Enter year of birth ", 1800, 2050);
    return 0;
}

int getInt(string prompt, int min, int max) {
    int val;
    bool valid = false;
    while (!valid) {  // Keep looping while we do not have valid input
        cout << prompt << "(" << min << "-" << max << "): ";
        cin >> val;
        if (!cin) {  // This is true if the wrong data type was entered
            cout << "Invalid integer\n";
            cin.clear();              // Clears the input error condition
            cin.ignore(10000, '\n');  // Clears the input buffer
        } else {
            // The rest of this is normal data validation
            if (val < min) cout << "Error: Below minimum of " << min << '\n';
            else if (val > max) cout << "Error: Above maximum of " << max << '\n';
            else valid = true;  // Input was valid, so set flag to stop loop
        }
    }
    return val;
}