#include <stdio.h> #include <malloc.h> #include <stdlib.h>typedef struct Node{int data;struct Node * pNext; }NODE,*PNODE;typedef struct Stack{PNODE pTop; //棧頂元素PNODE pBottom; //棧底部元素 }STACK,*PSTACK;void init(PSTACK); void push(PSTACK, int); void traverse(PSTACK);bool pop(PSTACK, int *p); bool empty(PSTACK ps); //判空int main(void){STACK s; //等價于struct Stackinit(&s); //初始化push(&s,1); //壓棧 push(&s, 2);push(&s, 3);push(&s, 4);push(&s, 5);push(&s, 6);push(&s, 7);traverse(&s); //遍歷輸出int val; //保存出棧的元素//出棧一個元素if (pop(&s, &val)) {printf("出棧成功，出棧的元素是%d\n", val);}else {printf("出棧失敗，出棧的元素是%d\n", val);}traverse(&s); //遍歷輸出while (true){ }return 0; }//初始化造出一個空棧 void init(PSTACK ps) {ps->pTop = (PNODE)malloc(sizeof(NODE));if (NULL == ps->pTop) {printf("動態內存失敗");exit(-1);}else {ps->pBottom= ps->pTop;ps->pTop->pNext = NULL;} }//壓棧 void push(PSTACK ps, int val) {//構造一個新的節點PNODE pNew=(PNODE)malloc(sizeof(NODE));pNew->data = val;pNew->pNext = ps->pTop;ps->pTop = pNew; }//遍歷 void traverse(PSTACK ps) {PNODE p = ps->pTop;while (p != ps->pBottom) {printf("%d ",p->data);p = p->pNext;}printf("\n");return; }//把ps所指向的棧出棧一次，并把出棧的元素存入pVal形參所指向的變量中，如果出棧失敗，返回false，否則返回true bool pop(PSTACK ps, int *pVal) {//如果為空返回falseif (empty(ps)) {return false;}else {PNODE tmp = ps->pTop; //構造一個臨時節點，存放ps指向頂部元素的地址（頂部元素是要出棧的）*pVal = tmp->data; //出棧的元素ps->pTop=tmp->pNext;free(tmp);tmp = NULL;return true;}}bool empty(PSTACK ps) {if (ps->pTop == ps->pBottom) {return true;}else {return false;} }

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