//DISPLAY 6.7 Checking Input
//Program to demonstrate the functions new_line and get_input.
#include <iostream>
using namespace std;

void new_line( );
//Discards all the input remaining on the current input line.
//Also discards the '\n' at the end of the line.
//This version works only for input from the keyboard.

void get_int(int& number);
//Postcondition: The variable number has been
//given a value that the user approves of.


int main( )
{
    int n;

    get_int(n);
    cout << "Final value read in = " << n << endl
         << "End of demonstration.\n";
    return 0;
}


//Uses iostream:
void new_line( )
{
    char symbol;
    do
    {
        cin.get(symbol);
    } while (symbol != '\n');
}
//Uses iostream:
void get_int(int& number)
{
    char ans;
    do
    {
        cout << "Enter input number: ";
        cin >> number;
        cout << "You entered " << number
             << " Is that correct? (yes/no): ";
        cin >> ans;
        new_line( );
    } while ((ans != 'Y') && (ans != 'y'));
}