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| #define _CRT_SECURE_NO_WARNINGS #include <stdio.h> #include <stdlib.h>
typedef int ElemType; typedef struct Node { ElemType data; struct Node* next; } Node, * LinkStack;
LinkStack InitLinkStack();
int StackEmpty(LinkStack S);
int StackLength(LinkStack S);
int PushLinkStack(LinkStack S, ElemType e);
int PopLinkStack(LinkStack S, ElemType* e);
void PrintLinkStack(LinkStack S);
void ClearLinkStack(LinkStack S);
int GetTopLinkStack(LinkStack S, ElemType* e);
int main(void) { ElemType e; printf("初始化链栈成功!\n"); LinkStack S = InitLinkStack(); int i = 0; printf("\n执行9次入栈操作!\n"); for (i = 0; i < 9; i++) { PushLinkStack(S, i + 1); } printf("执行完毕!当前栈长度为:%d\n打印当前栈:", StackLength(S)); PrintLinkStack(S); printf("\n执行4次出栈操作!\n"); for (i = 0; i < 4; i++) { PopLinkStack(S, &e); printf("第%d次:栈顶元素%d出栈成功!\n", i + 1, e); } printf("执行完毕!当前栈长度为:%d\n打印当前栈:", StackLength(S)); PrintLinkStack(S); GetTopLinkStack(S, &e); printf("\n执行取栈顶元素操作:当前栈顶元素为:%d\n", e); printf("\n执行清空栈操作!\n"); ClearLinkStack(S); if (StackEmpty(S)) printf("执行完毕!当前栈为空!\n"); else printf("清空栈失败!\n"); return 0; }
LinkStack InitLinkStack() { LinkStack S = (LinkStack)malloc(sizeof(Node)); S->next = NULL; return S; }
int StackEmpty(LinkStack S) { if (S == NULL) return 0; return S->next == NULL; }
int StackLength(LinkStack S) { int len = 0; if (StackEmpty(S)) return 0; Node* p = S->next; while (p != NULL) { len++; p = p->next; } return len; }
int PushLinkStack(LinkStack S, ElemType e) { Node* newNode = (Node*)malloc(sizeof(Node)); if (!newNode) return 0; newNode->data = e; newNode->next = S->next; S->next = newNode; return 1; }
int PopLinkStack(LinkStack S, ElemType* e) { if (StackEmpty(S)) return 0; Node* top = S->next; *e = top->data; S->next = top->next; free(top); return 1; }
void PrintLinkStack(LinkStack S) { Node* p = S->next; while (p) { printf("%d ", p->data); p = p->next; } printf("\n"); }
void ClearLinkStack(LinkStack S) { Node* p = S->next; while (p) { Node* q = p; p = p->next; free(q); } S->next = NULL; }
int GetTopLinkStack(LinkStack S, ElemType* e) { if (StackEmpty(S)) return 0; else { *e = S->next->data; return 1; } }
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