程序运行时自动产生1—100的随机数，接受用户键盘输入数据并给出提示信息，直至猜对。游戏者猜对后，显示猜测次数，并提供“重新开始”和“退出”功能-running at 1-100 automatically generate random numbers, user keyboard input data and gives a message until guessed right. Players guess right, shows the number of speculations, and provide " fresh start"　and " exit"　feature