Introduction - If you have any usage issues, please Google them yourself
The main achievement of this process is: a typing practice game. After running the program, the screen will be a random character, and then the user based on the characters on the keyboard corresponding letters, if the two match (called hit) by the scores of 1, otherwise score by 1. In addition, if more than a certain amount of time the user keys have not yet, then scores are also minus 1.