#include<stdio.h>
#include<malloc.h>
#include<stdlib.h>
struct Nobe
{
    int val;
    struct Nobe * pnext;
};
struct Nobe * inoutlist()
{
    int val;
    int i;
    int n;
    struct Nobe * p = (struct Nobe *)malloc(sizeof(struct Nobe));
    if(NULL == p)
    {
        printf("分配失败");
        exit(-1);
    }
    struct Nobe * ptail = p;
    ptail->pnext = NULL;
    printf("请输入个数：");
    scanf("%d",&n);
    for(i=0; i<n; i++)
    {
        printf("请输入第%d个数字：",i+1);
        scanf("%d",&val);
        struct Nobe * p1 ;
        p1 = (struct Nobe *)malloc(sizeof(struct Nobe));
        if(NULL == p1)
            {
                printf("分配失败");
                exit(-1);
            }
        p1->val = val;
        ptail->pnext = p1;
        p1->pnext = NULL;
        ptail = p1;
    }
    return p;
}
void inputlist(struct Nobe * p)
{
    struct Nobe * q = p->pnext;
    while(NULL != q)
    {
        printf("%d\n",q->val);
        q = q->pnext;

    }
}
main()
{
    struct Nobe * p = NULL;
    p = inoutlist();
    inputlist(p);
}

错在哪啊   我也照着郝斌视频上面的代码打了  还是不行 还是这些问题

你的编译器不支持在代码块中定义变量吧，你把变量定义都挪到函数开始试试。

可以是可以了 但是调试就出现这个

然后Ctel+F5 就能输入，只不过输出之输出了最后一个数

大神看楼下

你代码怎么改的？我试了是可以的。

不是说提前吗？

#include<stdio.h>
#include<malloc.h>
#include<stdlib.h>
struct Nobe
{
    int val;
    struct Nobe * pnext;
};
struct Nobe * inoutlist()
{
    int val;
    int i;
    int n;
    struct Nobe * p1;
    struct Nobe * ptail;
    struct Nobe * p = (struct Nobe *)malloc(sizeof(struct Nobe));
    if (NULL == p)
    {
        printf("分配失败");
        exit(-1);
    }
    ptail = p;
    ptail->pnext = NULL;
    printf("请输入个数：");
    scanf("%d", &n);
    for (i = 0; i<n; i++)
    {
        printf("请输入第%d个数字：", i + 1);
        scanf("%d", &val);
        
        p1 = (struct Nobe *)malloc(sizeof(struct Nobe));
        if (NULL == p1)
        {
            printf("分配失败");
            exit(-1);
        }
        p1->val = val;
        ptail->pnext = p1;
        p1->pnext = NULL;
        ptail = p1;
    }
    return p;
}
void inputlist(struct Nobe * p)
{
    struct Nobe * q = p->pnext;
    while (NULL != q)
    {
        printf("%d\n", q->val);
        q = q->pnext;

    }
}
main()
{
    struct Nobe * p = NULL;
    p = inoutlist();
    inputlist(p);
}

懂了  可以了  多谢大神