实验要求
1、建立线性表，可以顺序表或者链表。
2、完成线性表的插入和删除操作。
3、实验报告格式及图表清晰；
4、如有雷同，均算抄袭，按零分处理。
代码：

#include<iostream>
#include<stdio.h>
#include<stdlib.h>
#include <iostream>
using namespace std;

struct node
{
    int data;
    struct node* next;
};


void add(struct node* h, int i, int x)//插在第i个数之后，如果i大于链表长度则插在链尾
{
    struct node* p = h, * r;
    if (h->data <= i) i = h->data;
    int cnt = 0;
    while (i != cnt) p = p->next, cnt++;
    r = p->next;
    struct node* q = (node*)malloc(sizeof(node));
    q->data = x;
    p->next = q;
    q->next = r;
    h->data++;
}

void ears(struct node* h, int i)//删除第i个元素
{
    struct node* p = h, * r;
    if (i > h->data || i == 0) {
        cout << "没有该元素！" << endl;
        return;
    }
    if (h->data == i) {
        r = p;
        while (p->next) r = p, p = p->next;
        free(p);
        r->next = NULL;
        h->data--;
        return;
    }
    int cnt = 1;
    while (i != cnt) p = p->next, cnt++;
    r = p->next;
    p->next = r->next;
    free(r);
    h->data--;
}

struct node* init(int n)
{
    struct node* h = (node*)malloc(sizeof(node));
    h->data = 0;
    struct node* p, * r;
    p = (node*)malloc(sizeof(node));
    cin >> p->data;
    p->next = NULL;
    h->data++;
    h->next = p;
    for (int i = 1; i < n; i++) {
        r = (node*)malloc(sizeof(node));
        cin >> r->data;
        r->next = NULL;
        h->data++;
        p->next = r;
        p = p->next;
    }
    return h;
}

void print(struct node* h)
{
    cout << "链表中数据如下：";
    struct node* r = h->next;
    while (r) {
        cout << r->data << ' ';
        r = r->next;
    }
    putchar(10);
}

int main()
{
    int n;
    cout << "请输入链表长度" << endl;
    cin >> n;
    cout << "请输入" << n << "个数据" << endl;
    struct node* head = init(n);
    
    print(head);

    int i, x;

    cout << "输入插入位置和要插入的数:  ";
    cin >> i >> x;
    add(head, i, x);
    print(head);

    cout << "输入删除位置:  ";
    cin >> i;
    ears(head, i);
    print(head);

    return 0;
}