C++ to check if user input is a number, not a character or a symbol

Question

I have been trying to incorporate a check to see if the input from the user is a valid input. For example my program wants the user to guess a number between 1-1000. My prog

Answer 1

Here's a snippet I like to keep around for using in these sorts of situations.

int validInput()
{
    int x;
    std::cin >> x;
    while(std::cin.fail())
    {
        std::cin.clear();
        std::cin.ignore(std:numeric_limits::max(),'\n');
        std::cout << "Bad entry.  Enter a NUMBER: ";
        std::cin >> x;
    }
    return x;
}

Then any place you want to use cin>>guess, instead, use guess = validInput();