c++ code snippets

validate_input.h

/*
* function to validate input to be of type `T`
*/
template<typename T>
T& validateInput(T& val, string prompt)
{
    while (true) {
        cout << prompt;
        if (cin >> val) {
            break;
        }
        else {
            cin.clear();
            cin.ignore(numeric_limits<std::streamsize>::max(), '\n');
        }
    }
    return val;
}