My cin is being ignored inside a while loop
问题 I am trying to code a simple question and number checker into my first C++ program. Problem is, when I type a string like one two, or three, the program becomes and infinite loop and it ignores the cin function to re-assign lives to a number. cout << "How many lives would you like 1 (hard), 2 (medium), or 3 (easy)?" << endl; cin >> lives; while(lives != 1 && lives != 2 && lives != 3 && !isdigit(lives)) { cout << "You need to input a number, not words." << endl; cout << "How many lives would