数据结构线性表 - 链栈练习Demo

链栈相对于顺序栈来说更加灵活，不存在栈满的问题，但是实现起来比顺序栈稍微麻烦一点，因为栈主要的操作就是出栈和入栈操作，作为链栈的练习，我也只写了出栈和入栈还有查看链栈数据这几个功能。代码写完测试完感觉没啥问题。直接上代码。

#include <iostream>
using namespace std;

typedef struct{
	char p;
}Elem;

typedef struct SNode{
	Elem data;
	struct SNode *next;
}SNode,*LinkStack;


int flag = 1;
void InitStack(LinkStack &L, LinkStack &H)
{
	L = NULL;
	H = L;
	cout << "初始化成功！";
}

void Push(LinkStack &L,LinkStack &H)
{
	char k;
	LinkStack p;
	cout << "输入入栈的数据：";
	cin >> k;
	if (H == L)
	{
		L = new SNode;
		L->data.p = k;
		L->next = NULL;
		H = L;
	}
	p = new SNode;
	p->data.p = k;
	p->next = H;
	H = p;
	flag = 0;
}

void Push_All(LinkStack &L, LinkStack &H)
{
	char k='NULL';
	cout << "输入入栈的数据(#结束！)：";
	while (k != '#')
	{
		cin >> k;
		if (k = '#')
		{
			return;
		}
		if (H == L)
		{
			L = new SNode;
			L->data.p = k;
			L->next = NULL;
			H = L;
		}
			LinkStack p;
			p = new SNode;
			p->data.p = k;
			p->next = H;
			H = p;
			flag = 0;
	}

}

void Pop(LinkStack &L, LinkStack &H)
{
	if (flag == 1)
	{
		cout << "链栈没有数据，无法弹出数据！";
		return;
	}
	if (H == L)
	{
		cout << H->data.p << "弹出栈!！";
		flag = 1;
	}
	else
	{
		LinkStack p;
		p = H;
		H = H->next;
		cout << p->data.p << "弹出栈！";
		delete p;
	}
}

void print_Stack(LinkStack &L, LinkStack &H)
{
	LinkStack p;
	p = H;
	while (p->next != NULL)
	{
		cout << p->data.p;
		p = p->next;
	}
}

void Contents()  //菜单清单
{
	cout << "*********************************\n";
	cout << "*         链 栈 练 习           *\n";
	cout << "*                               *\n";
	cout << "*        1.初始化链栈           *\n";
	cout << "*        2.数据入栈             *\n";
	cout << "*        3.数据出栈             *\n";
	cout << "*        4.查看链栈中的数据     *\n";
	cout << "*        5.退出程序             *\n";
	cout << "*********************************\n";
}

void main()
{
	LinkStack L,H;
	int a;
	Contents();
	while (1)
	{
		system("cls");
		Contents();
		cout << "请选择功能：";
		cin >> a;
		switch (a)
		{
		case 1: InitStack(L, H); system("PAUSE"); break;
		case 2: Push(L, H); system("PAUSE"); break;
		case 3: Pop(L, H); system("PAUSE"); break;
		case 4: print_Stack(L, H); system("PAUSE"); break;
		case 5:exit(-1);
		default: printf("输入错误！请重新输入"); system("PAUSE"); break;
		}
	}
}

栈的知识主要在顺序栈说了，想要初步了解的可以看看我的上一篇顺序栈的帖子。一起学习，，加油！