// main.cpp
#include <iostream>
using namespace std;
#include "Status.h"
typedef int SElemType;
#include "SqStack.h"
int main()
{
SqStack S;
SElemType e;
InitStack(S);
Push(S,2);
Push(S,4);
Push(S,6);
Push(S,8);
cout<<" 由栈底至栈顶的元素为：";
StackTraverse(S);
cout<<" 栈的长度为："<<StackLength(S)<<endl;
GetTop(S,e);
cout<<" 栈顶元素为："<<e<<endl;
Pop(S,e);
cout<<" 由栈底至栈顶的元素为：";
StackTraverse(S);
cout<<" 栈的长度为："<<StackLength(S)<<endl;
GetTop(S,e);
cout<<" 栈顶元素为："<<e<<endl;
return 0;
}
// Status.h
#ifndef yuan_Status_h
#define yuan_Status_h
#define TRUE 1
#define FALSE 0
#define OK 1
#define ERROR 0
#define INFEASIBLE -1
#define OVERFLOW -2
typedef int Status;
#endif
// SqStack.h
#ifndef Y_Y_SqStack_h
#define Y_Y_SqStack_h
#define MAXSIZE 100
typedef struct{
SElemType *base;
SElemType *top;
int stacksize;
}SqStack;
Status InitStack(SqStack &S)
{
S.base=new SElemType[MAXSIZE]; //为顺序栈分配一个最大容量为MAXSIZE的数组空间
if(!S.base) exit(OVERFLOW);
S.top=S.base;
S.stacksize=MAXSIZE;
return OK;
}
Status Push(SqStack &S,SElemType e)
{
if (S.top-S.base==S.stacksize) return ERROR; //满栈
*S.top++=e; //元素e压入栈顶，栈顶指针加1
return OK;
}
Status Pop(SqStack &S,SElemType &e)
{
if(S.top==S.base) return ERROR; //空栈
e=*--S.top; //栈顶指针减1，将栈顶元素赋给e
return OK;
}
Status StackLength(SqStack S)
{
return (int)(S.top-S.base);
}
Status GetTop(SqStack S,SElemType e)
{
if (S.top==S.base) exit(1);
return *(S.top-1); //栈顶指针减1，返回栈顶元素
}
void StackTraverse(SqStack S)
{
SElemType *p;
p=S.base;
while(p!=S.top)
{
cout<<*p++<<" ";
}
cout<<endl;
}
#endif