这段代码是我在Linux系统下写的，在Linux平台下编译能通过，运行也正常。可是发给同学的时候同学却说编译没办法通过。该同学用的是vc 6.0

我又发给了另外一个同学，他用的貌似是vs。
编译也没能通过，而且错误信息和刚刚那位同学还不一样。

这是我的代码：

#include <stdio.h>
#include <stdlib.h>
#define MEMBER_MALLOC (struct member*)malloc(sizeof(struct member))

struct member
{
    int num;
    int password;
    struct member *next;
};

struct member* input(int *count_ptr, int *M_ptr)
{
    int i = 1;
    struct member *head = NULL, *tail = NULL;
    printf("请输入人数： ");
    scanf("%d", count_ptr);
    printf("请输入M： ");
    scanf("%d", M_ptr);
    printf("请依次输入密码");
    
    //创建循环链表
    for (; i <= *count_ptr; i++)
    {
        struct member *node = MEMBER_MALLOC;
        scanf("%d", &(node->password));
        node->num = i;
        node->next = NULL;

        if (NULL == head)
            head = tail = node;
        else
        {
            tail->next = node;
            tail = node;
        }

        //如果是最后一个节点，则把它的Next指向头节点
        if (i == *count_ptr)
            node->next = head;
    }
    return head;
}

void run(struct member* list, int *count_ptr, int *M_ptr)
{
    int ct = 0;             //计数器
    
    //让last指向最后一个元素，让current指向第一个元素
    struct member *current, *last;
    last = current = list;

    while (last->next != current)
        last = last->next;

    //开始删人
    while (1 != (*count_ptr - ct))
    {
        int flag;

        //找到要删除的人
        for(flag = 1; flag != *M_ptr; flag++)
        {
            current = current->next;
            last = last->next;
        }
        
        //删人，从链表中移除，计数器加一
        ct++;
        struct member* temp = current;
        current = current->next;
        last->next = current;
        printf("%d\n", temp->num);
        *M_ptr = temp->password;
        free(temp);
    }
    printf("%d\n", current->num);
    //删除最后一个人
    free(current);
}
int main()
{
    int count;              //人数
    int M;                  //M
    struct member *list = NULL;
    list = input(&count, &M);
    run(list, &count, &M);
    return 0;
}

源代码也能在这里看到：
各位同学能不能帮我编译下

[ 本帖最后由 thlgood 于 2012-9-4 16:21 编辑 ]

额。。。。对对，应该是这里的问题。。我用的是gcc，变量可以不在作用域最前面声明