主要功能实现游戏添加和查询，输入游戏名称、类别、发型公司、发型年份进行添加，其中名称必填判断，发行年份要求4位数字。然后可以根据需求按条件查询。-Main function of the game to add and query, enter the name of the game, category, company hairstyles, hairstyles year to add, which is required to determine the name, release ye