#include?
#include?
#define?STACK_SIZE?100

typedef?struct????/*?定義一個運算符棧?*/
{
????char?*?base;??/*指向棧底的指針*/
????char?*?top;???/*指向棧頂的指針*/
}OPTR_Stack;

typedef?struct?????/*?定義一個操作符棧?*/
{
????float?*?base;????/*指向棧底的指針*/
????float?*?top;????/*指向棧頂的指針*/
}OPND_Stack;

void?OptrInIt（OPTR_Stack?*s）????????/*?初始化運算符棧?*/
{
????s->base=（char*）malloc（STACK_SIZE*sizeof（char））;/*分配內存*/
????if（s->base==NULL）?exit（0）;????/*?判斷棧是否為空?*/
????s->top=s->base;????????????????
}

int?OptrEmpty（OPTR_Stack?s）????????/*?定義運算符空棧?*/
{
????if（s.top==s.base）????????????/*判斷棧空*/
????????return?1;????????????????/*?棧空返回1，否則為0?*/
????else
????????return?0;
}

void?OptrPush（OPTR_Stack?*schar?elem）?????/*?入棧?*/??
{
????if?（s->top-s->base==STACK_SIZE）????/*?判斷是否棧滿?棧滿則

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件???????8750??2011-10-13?15:32??Calculate.c

?????文件???????8086??2011-10-12?21:02??Calculate2.c

-----------?---------??----------?-----??----

????????????????16836????????????????????2