猜数字小游戏源代码。游戏规则为逐个输入四个不重复的0到9的数字，然后确认，系统会提示你的正确情况，A表示位置数字全对的，B表示位置不对但数字对，一共10次机会看你能否才对一个数字。-Number guessing game source code. Rules of the game is not repeated for the four-by-input 0 to 9, then confirm, the system will prompt you to correct the situation, A represents the location of the whole number, B is the wrong place but the number of pairs, a total of 10 times the chance to see you No fishes a number.