用C编的小游戏，在0-9中猜四个数字，没有重复的。每猜一次，程序就会给出提示，数字对但位置错，以及数字位置都对。不断提示，6次机会，猜对有奖啊！-With C-series game in the 0-9 in a four-digit guess, there is no repetition. Guess every time, procedures will be given tips, the number of but the wrong location, as well as th