编程实现链栈的存储结构与基本算法，主要包括以下功能：

 　　初始化链栈S

 　　判断链栈S是否为空

 　　依次将字符数据类型的元素’a’,’b’,’c’,’d’,’e’入栈

 　　判断链栈S是否为空

 　　依次将链栈S栈内的全部元素出栈，并输出出栈结果

 　　判断链栈S是否为空

 　　释放并销毁链栈S

-Storage structure and basic algorithms programming chain stack, including the following features: whether 　initialize the link stack S 　Analyzing link stack S is empty 　sequentially character data type of the element ' a' , ' b' , ' c' , '　d ' ,'　e ' stack 　Analyzing link stack S is empty 　successively to all elements within the stack link stack S stack and the stack output judgment results 　link stack S is empty and destroyed 　release link stack S