猜数字游戏代码。用户输入猜测的四位数字，系统给出用户猜测的结果（包括是否猜对位置、是否猜对数字及猜对位置或数字的个数，A代表位置数字猜测正确，B代表数字对位置不对）-猜数字game code. Guess the user to enter four digits, the system gives the user to guess the results (including whether or not to guess on the location, whether or not to