add exit, and loop

@@ -4,13 +4,23 @@ using namespace std;
 
 int main()
 {
+	while (1)
+	{
+	
 	string message;
 	cout << "input your message : ";
 	getline(cin, message);
+	if (message == "exit")
+	{
+		cout << "exit program!" << endl;
+		system("pause");
+		return 0;
+	}
 	
 	cout << "your message :" << message << endl;
 	
 
+	}
 
 
 	system("pause");