数据结构（C语言版）求一个创建线性表、插入运算的程序和算法

//Windows7环境 VS2017编译


#define _CRT_SECURE_NO_WARNINGS

#include<stdio.h>
#include<stdlib.h>

typedef struct NAME         //自定义名字
{
    int data;
    struct NAME *next;
} name;
name *creat(int n)     //创建长度为n的单链表
{
    name *head, *node, *end;
    head = (name*)malloc(sizeof(name));
    end = head;
    for (int i = 0; i < n; i++)
    {
        node = (name*)malloc(sizeof(name));
        printf("第%d个节点的数据域为：", i + 1);
        scanf("%d", &node->data);
        printf("\n");
        end->next = node;
        end = node;
    }
    end->next = NULL;
    return head;
}
void delet_normal(name*list, int n)    //删除第n个节普通点并释放内存
{
    name *in = nullptr;            // in:所删除节点的前节点, t:要删除的节点
    name *t = list;
    int i = 0;
    while (i < n && t != NULL)
    {
        in = t;
        t = t->next;
        i++;
    }
    if (t != NULL)
    {
        in->next = t->next;
        free(t);
        printf("删除成功\n");
    }
    else printf("该链表没有第%d个节点\n", n);
}


//删除表头节点为void delet_normal(name*list, 1)


void delet_tail(name * list)         //删除表尾节点
{
    name*t = list;
    name *in = nullptr;
    while (t->next != NULL) {                 //使t成为尾节点，in 为其前一个节点
        in = t;
        t = t->next;
    }
    in->next = NULL;
    free(t);
    printf("删除成功\n");

}

void inter_normal(name *list, int n, int data)        //在第n个节点之后插入新节点,新节点数据域为data
{
    name *t = list; //in:新插入的节点；t:第n个节点
    name *in;
    int i = 0;
    while (i < n&&t != NULL)
    {
        t = t->next;
        i++;
    }
    if (t != NULL)
    {
        in = (name*)malloc(sizeof(name));
        in->data = data;
        in->next = t->next;
        t->next = in;
    }
    else
        printf("该链表没有第%d个节点\n", n);
}

//在表头插入节点为void inter_normal(name *list, 0,data)



void inter_tail(name *list, int data)       //在表尾插入节点
{
    name *in;                     //in为插入的节点
    name *t = list;
    while (t->next != NULL)                 //使t成为尾节点
        t = t->next;
    in = (name*)malloc(sizeof(name));
    in->data = data;
    t->next = in;
    in->next = NULL;
}


void output(name *list)      //遍历输出
{
    name *t = list;
    t = t->next;
    while (t != NULL)
    {
        printf("【%d】 ", t->data);
        t = t->next;
    }

    printf(" end \n");
}

void search(int aim, name *list)     //查找数据域元素出现的位置
{
    bool flag = false;
    name *t = list;
    t = t->next;
    for (int i = 1; t != NULL; t = t->next)
    {
        if (t->data == aim)
        {
            printf("第%d个  ", i);
            flag = true;
        }
        i++;
    }
    if (flag == false)
    {
        printf("无该元素");
    }
    printf("\n");
}

void  read(name*list, int a)   //读出链表第a个元素
{
    name *t = list;
    int i = 0;
    while (i < a&&t != NULL)
    {
        t = t->next;
        i++;
    }
    if (t == NULL)
    {
        printf("该链表没有第%d个元素\n", a);
    }

    else
        printf("第%d个元素数据域为%d\n", a, t->data);
}

void change(int a, name*list, int b)       //修改第a个元素的数据域为b
{
    name*t = list;
    for (int i = 0; i < a; i++)
    {
        t = t->next;
    }
    if (t != NULL)
    {
        t->data = b;
        printf("修改成功\n");
    }
    else
        printf("该链表没有第%d个节点", a);
}
int main()
{
    name * A = nullptr;
    for (;;)
    {
        printf("选择功能\n1:创建新链表\n2：遍历输出链表数据域\n3：在第n个节点后插入节点\n4：在表头插入节点\n5：在表尾插入节点\n6：删除第n个节点后的节点\n7：删除头节点\n8：删除尾节点\n9：读出链表第n个元素的数据域 \n10：修改第n个节点的数据域\n11：查找数据域为a的节点在链表中的位置\n0：退出\n\n\n");
        int choice;
        scanf("%d", &choice);
        switch (choice)
        {
        case 1:
            int lenth;
            printf("新建链表长度为：");
            scanf("%d", &lenth);
            A = creat(lenth);
            break;

        case 2:
            output(A);
            break;

        case 3:
            int locate, data;
            printf("在第几个节点后插入？\n");
            scanf("%d", &locate);
            printf("插入节点的数据域为：");
            scanf("%d", &data);
            inter_normal(A, locate, data);
            break;

        case 4:
            printf("插入节点的数据域为：");
            scanf("%d", &data);
            inter_normal(A, 0, data);
            break;

        case 5:
            printf("插入节点的数据域为：");
            scanf("%d", &data);
            inter_tail(A, data);
            break;

        case 6:
            printf("删除第n个节点 n为：");
            scanf("%d", &locate);
            delet_normal(A, locate);
            break;

        case 7:
            delet_normal(A, 1);
            break;

        case 8:
            delet_tail(A);
            break;

        case 9:
            printf("读出第n个节点数据域 n为：");
            scanf("%d", &locate);
            read(A, locate);
            break;

        case 10:
            printf("修改第n个节点数据域 n为：");
            scanf("%d", &locate);
            printf("想要改成：");
            scanf("%d", &data);
            change(locate, A, data);
            break;

        case 11:
            printf("输入要查找的数据域：");
            scanf("%d", &data);
            search(data, A);
            break;

        case 0:
            exit(0);
        }
    }
    system("pause");
    return 0;
}