时间:2022-10-07 11:28:29 | 栏目:C代码 | 点击:次
(1) 栈包含7个元素,依次是67,3,88,6,1,7,0,采用尾插入法创建 栈,为该栈设置两个指针,一个bottom和一个top指针;
(2) 入栈函数push,该函数完成向栈中插入元素的功能,利用push函数,将数字-9插入到栈内,并将栈里的元素遍历;
(3) 出栈函数pop,该函数完成从栈中删除元素的功能,利用pop函数,删除此时栈里面的3个元素,并遍历栈;
(4) 函数length,求出此时栈内元素的个数。
#include<stdio.h> #include<stdlib.h> struct node { int date; struct node *next; }; struct stack { struct node *bottom; struct node *top; }s; struct stack *creat(struct stack *s); //创建栈 void push(struct stack *s,int e); //入栈 void print(struct stack *s); //打印输出 void pop(struct stack *s); //出栈 void length(struct stack *s); //输出栈的长度 int main() { struct stack *s; int e; s=creat(s); push(s,67); push(s,3); push(s,88); push(s,6); push(s,1); push(s,7); push(s,0); printf("初始栈元素为:"); print(s); printf("\n"); printf("\n"); push(s,-9); printf("插入元素后:"); print(s); printf("\n"); printf("\n"); pop(s); pop(s); pop(s); printf("删除元素后:"); print(s); printf("\n"); printf("\n"); length(s); return 0; } struct stack *creat(struct stack *s) { s=(struct stack *)malloc(sizeof(struct stack )); s->bottom=s->top=(struct node *)malloc(sizeof(struct node)); s->top->next=NULL; s->bottom->next=NULL; return s; } void push(struct stack *s,int e)//进栈 { struct node *p; p=(struct node *)malloc(sizeof(struct node)); p->date=e; p->next=NULL; s->top->next=p; s->top=p; } void pop(struct stack *s)// 出栈 { struct node *p,*q; p=s->bottom; while(p->next!=NULL) { q=p; p=p->next; } q->next=NULL; s->top=q; } void print(struct stack *s)//打印输出 { struct node *p = s->bottom->next; while(p!=NULL) { printf("%4d",p->date); p=p->next; } } void length(struct stack *s)//计算长度 { struct node *p=s->bottom->next; int i=0; while(p!=NULL) { i++; p=p->next; } printf("此时栈的长度为:%4d",i); }