“猜数字”游戏。计算机给出一个“10~15位长的数字”（假设每个数字0~9不允许重复4次以上），用户每猜一个数，计算机便告诉用户，他所猜的数字中，位置正确的数的个数，以及数字正确而为之不正确的数的个数。用户根据计算机的提示不断猜测答案。-" Guessing"　game. Computer gives a " 10 to 15 long number"　(assuming each number from 0 to 9 allowed to repeat four times), each user guess a number, the computer will tell the user, guess he figures, the number of correct position the number, and the number of correct and incorrect whom the number of values. According to the computer prompts the user constantly guessing the answer.