C 언어 데이터 구조 - 창고 - 체인 테이블 실현

#ifndef LINKSTACK_H_INCLUDED
#define LINKSTACK_H_INCLUDED
typedef struct Node{
    int data;
    struct Node *next;
}Node, *PNode;

typedef struct LinkStack{
    PNode top;
}LinkStack, *PLinkStack;

PLinkStack init(void);

int push(int data,PLinkStack pStack);

int pop(PLinkStack pStack,int *data);

int getTop(PLinkStack pStack,int *data);

void printStack(PLinkStack pStack);

#endif // LINKSTACK_H_INCLUDED

#include 
#include 
#include "LinkStack.h"

PLinkStack init(void){
    PLinkStack pStack=(PLinkStack)malloc(sizeof(struct LinkStack));
    pStack->top=NULL;
}

//    ： nulldata=data;
    pNode->next=pStack->top;
    pStack->top=pNode;
}

int pop(PLinkStack pStack,int *data){
    PNode tNode=pStack->top;
    if(tNode==NULL){
        return 0;
    }
    //        
    *data=tNode->data;
    pStack->top=tNode->next;
    free(tNode);
    return 1;
}

int getTop(PLinkStack pStack,int *data){
    PNode tNode=pStack->top;
    if(tNode==NULL){
        return 0;
    }
    *data=tNode->data;
    return 1;
}

void printStack(PLinkStack pStack){
    PNode tNode=pStack->top;
    while(tNode!=NULL){
        printf("Node:%d->",tNode->data);
        tNode=tNode->next;
    }
    printf("
");
}


int main()
{
    PLinkStack linkStack=init();
    push(1,linkStack);
    push(2,linkStack);
    push(3,linkStack);
    int data;
    pop(linkStack,&data);
    printf("pop top data=%d
",data);

    int top;
    getTop(linkStack,&top);
    printf("current top data=%d
",top);

    printStack(linkStack);
    return 0;
}