#include <cstdlib>
#include <iostream>

using namespace std;

float Addition(float num1, float num2)
{
    return num1 + num2;
}

int main()
{
    begining:
    float number1;
    float number2;
    //addition
    cout << "Insert your first number to add (NO LETTERS): ";
    cin >> number1;
    cout << "Now your second (NO LETTERS): ";
    cin >> number2;
    if(number1 + number2 > 1000000000 || number1 + number2 < -1000000000)
    {
               cout << "The answer must be equal to or between -1000000000 and 1000000000\n" <<endl;
               system("pause");
               cout << endl;
               goto begining;
    }
    else
    {             cout << "The answer is: " << Addition(number1, number2);
                  cout <<endl <<endl;
                  system ("pause");
                  cout << endl;
                  goto begining;  
    }
}