参考书籍:《大话数据结构》
环境:VS2017
#include<stdio.h>
#include<stdlib.h>
#define OK 1
#define ERROR 0
#define TRUE 1
#define FALSE 0
#define MAXSIZE 20
typedef int Status;
typedef int SElemType;
typedef struct StackNode
{
SElemType data;
struct StackNode *next;
}StackNode,*LinkStackPtr;
typedef struct
{
LinkStackPtr top;
int count;
}LinkStack;
Status visit(SElemType e)
{
printf("%d ", e);
return OK;
}
Status InitStack(LinkStack *S)
{
S->top = (LinkStackPtr)malloc(sizeof(StackNode));
if (!(S->top))
return ERROR;
S->top = NULL;
S->count = 0;
return OK;
}
Status StackEmpty(LinkStack S)
{
if (S.count == 0)
return TRUE;
else
return FALSE;
}
Status ClearStack(LinkStack *S)
{
LinkStackPtr p, q;
p = S->top;
while (p)
{
q = p->next;
free(p);
p = q;
}
return OK;
}
int StackLength(LinkStack S)
{
return S.count;
}
Status GetTop(LinkStack S, SElemType *e)
{
*e = S.top->data;
return OK;
}
Status Push(LinkStack *S, SElemType e)
{
LinkStackPtr p = (LinkStackPtr)malloc(sizeof(StackNode));
p->data = e;
p->next = S->top;
S->top = p;
S->count++;
return OK;
}
Status Pop(LinkStack *S, SElemType *e)
{
LinkStackPtr p = (LinkStackPtr)malloc(sizeof(StackNode));
*e = S->top->data;
p = S->top;
S->top = S->top->next;
free(p);
S->count--;
return OK;
}
Status StackTraverse(LinkStack S)
{
int i = 0;
LinkStackPtr p = S.top;
while (p)
{
visit(p->data);
p = p->next;
}
printf("\n");
return OK;
}
int main()
{
int j;
LinkStack s;
int e;
if (InitStack(&s) == OK)
for (j = 1; j <= 10; j++)
Push(&s, j);
printf("栈中元素依次为:");
StackTraverse(s);
Pop(&s, &e);
printf("弹出的栈顶元素 e=%d\n", e);
printf("栈空否:%d(1:空 0:否)\n", StackEmpty(s));
GetTop(s, &e);
printf("栈顶元素 e=%d 栈的长度为%d\n", e, StackLength(s));
ClearStack(&s);
printf("清空栈后,栈空否:%d(1:空 0:否)\n", StackEmpty(s));
system("pause");
return 0;
}