猜数游戏。计算机选择一个四位数，由游戏者来猜这个数，游戏者在终端不停输入四位数，每输入一次，计算机都指出该数猜对几位数字及有几位正确的数字的位置也正确，直到游戏者全部猜正确为止，计算机输出游戏者所猜的次数。编程序，实现该游戏。-Guessing game. Computer to select a four-digit, from the player to guess the number of players constantly in the terminal input four-digit, one for each input, the computer is that the number of guess several several figures and the location of the correct figure is also correct until the players all guess the correct date, the computer output by those who guess the number game. Programmed to achieve the game.