#include <cstdio>
#include <iostream>
#include <cstdlib>

using namespace std;

void sayHello(void){
     cout << "Hi there!" << "\n";
     }

int numberIn(void){
    int tempNumber;
    cout << "Enter the number:\n" << endl;
    cin >> tempNumber;
    
    if (typeid(tempNumber) == typeid(int)){
       cout << tempNumber << "\n";
       return tempNumber;
       }
    else {
         cout << "Error: enter the NUMBER, please!\n";
         numberIn();}
}


int main (void){
    sayHello();
    
    int number1;
    number1 = numberIn();
    cout << number1;
    
    system("PAUSE");
    //cin.get();

}