View difference between Paste ID: 6Wv2Ndat and tJFMwHVK

 #include <iostream>
 #include <string>
 using namespace std;
 
 void printIntro();
 void printGuessAnswer();
 void printBar();
 void playGame();
 bool askToPlayAgain();
 
 int main()
 {
 	do
 	{
 		printIntro();
 		playGame();
 	} while (askToPlayAgain());
 
 
 	system("pause");
 	return 0;
 }
 
 void playGame()
 {
 	constexpr int enterTime = 5;
 	for (int i = 0; i < enterTime; i++)
 	{
 		printGuessAnswer();
 		printBar();
 	}
 }
 
 void printIntro()
 {
 	// print the fucking introduction of the fucking game
 	constexpr int word_length = 5;
 
 	cout << "Welcom to bullcow game\n";
 	cout << "Can you guess the " << word_length;
 	cout << " letter isogram that I am thinking about?\n";
 	return;
 }
 
 void printGuessAnswer()
 {
 	// print the guess's answer not pass the answer to the variable
 	string x;
 
 	cout << "enter your answer: ";
-	getline(cin, x);
+	do { getline(cin, x); } while(!x.size());
 	cout << "your answer: " << x << endl;
 }
 
 void printBar()
 {
 	// print the fucking bar
 	cout << "--------------------------------------\n";
 }
 
 bool askToPlayAgain()
 {
 	string str;
 
 	cout << "Do you want to play again?(Y/N): ";
 	cin >> str;
 
 	return (str[0] == 'y' || str[0] == 'Y');
 }