1、定义顺序栈类型，实现栈的所有基本操作。 2、定义链栈类型，实现栈的所有基本操作。 3、实现数制的转换-1, define the order of the stack type, to achieve the stack all the basic operations. 2, define the chain stack type to achieve the stack all the basic operations. 3, conversion of number syste