双链表,指针参数问题，求指教
DbLink.h文件

C/C++ code

#ifndef _DbLink_H#define _DbLink_H#include<stdio.h>#include<stdlib.h>#include<string.h>typedef struct DbLink_L {    struct DbLink_L *prev,*next;        /* 前驱和后继 */    char    name[50];    int        en_g;    int        math_g;}DbLink,*pDbLink;void InitList(pDbLink &L) /* 初始化双链表，建立头结点 */{    L=(pDbLink)malloc(sizeof(DbLink));    if(L==NULL)        {            printf("malloc failde.\n");            exit(1);        }        L->prev=L->next=NULL;    }void CreateList(pDbLink &L) /* 建立结点 */{    pDbLink newNode;    char    order='Y';        while（order=='Y'）    {        newNode=(pDbLink)malloc(DbLink);        printf("please input name,english grade,math grade\n:");        scanf("%s%d%d",newNode->name,&(newNode->en_g),&(newNode->math_g));        newNode->prev=L;        newNode->next=L->next;        L->next=newNode;        printf("Create new node\n(Y/N):");        scanf("%c",order);        }    }    void ListTraverse(pDbLink L) /* 遍历打印链表 */{    pDbLink p;    p=L->next    int i=1;        while(p->next)    {        printf("\n%d.name:%s,english grade:%d,math grade:%d\n",                    i,p->name,p->en_g,p->math_g                    );        p=p->next;        i++;        }    }void DelNode(pDbLink &L,int num) /* 删除某结点 */{    pDbLink p;    int    i=1;        p=L->next;    for(;p&&i<num;i++)    {        p=p->next;        }    p->prev->next=p->next;    p->next->prev=p->prev;    free(p);    printf("Success to del.\n");    }void alterNode(pDbLink &L,int num) /* 修改结点值 */{    pDbLink p;    int    i=1;        p=L->next;    for(;p&&i<num;i++)    {        p=p->next;        }        printf("\n%d.name:%s,english grade:%d,math grade:%d\n",                num,p->name,p->en_g,p->math_g                );    printf("the value to alter \n:");    scanf("%s%d%d",p->name,&(p->en_g),&(p->math_g));    printf("Success to alter.\n");    }    void DestroyList(pDbLink &L) /* 销毁链表 */{    pDbLink p,q;    p=L->next;        while(p)    {        q=p->next;        free(p);        p=q;        }    free(L);    printf("Success to destroy Double Link List.\n");    }void InsertList(pDbLink &L,int num){    pDbLink p,newNode;    int    i=1;        p=L->next;    for(;p&&i<num;i++)    {        p=p->next;        }    newNode=(pDbLink)malloc(sizeof(DbLink));    printf("please input name,english grade,math grade\n:");    scanf("%s%d%d",newNode->name,&(newNode->en_g),&(newNode->math_g));    newNode->prev=p;    newNode->next=p->next;    p->next->prev=newNode;    p->next=newNode;        printf("Success to insert the node.\n");    }    #endif

test.c文件

C/C++ code

#include "DbLink.h"void main(){    int order,number;    pDbLink list;        InitList(list)    printf("============★★================\n");    printf("====== 1.Create a List ==========\n");    printf("====== 2.Insert a Node ==========\n");    printf("====== 3.Delete a Node ==========\n");    printf("====== 4.Alter  a Node ==========\n");    printf("====== 5.Print the List =========\n");    printf("====== 6.Destroy the List =======\n");    printf("====== 7.exit the program =======\n");    printf("============★★================\n");    printf("please input the order\n:");    scanf("%d",&order);        while(order){    switch(order)    {        case 1:            CreateList(list);            break;        case 2:            printf("input the number to insert\n:");            scanf("%d",&number);            InsertList(list,number);            break;        case 3:            printf("input the number to delete\n:");            scanf("%d",&number);            DelNode(list,number);            break;        case 4:            printf("input the number to alter\n:");            scanf("%d",&number);            alterNode(list,number);            break;        case 5:            ListTraverse(list);            break;        case 6:            DestroyList(list);            break;        case 7:            exit(0);            break;        default:            continue;        }    }    } 
 

为啥，我函数里面用pDbLink &L，这样的指针参数，就报错那，用法错了吗？求高手指教，不胜感激。

[解决办法]
pDbLink &L, 你这是用C99 还是 C++的引用？
[解决办法]
参考是C++的概念，请将test.c改为test.cpp再试试？
[解决办法]
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

typedef struct DbLink_L {
struct DbLink_L *prev,*next; /* 前驱和后继 */
char name[50];
int en_g;
int math_g;
}DbLink,*pDbLink;

void InitList(pDbLink *L) /* 初始化双链表，建立头结点 */
{
*L=(pDbLink)malloc(sizeof(DbLink));
if(L==NULL)
{
printf("malloc failde.\n");
exit(1);
}
(*L)->prev=NULL;
(*L)->next=(*L)->prev;
}

void CreateList(pDbLink *L) /* 建立结点 */
{
pDbLink newNode;
char order='Y';
pDbLink ptr = *L;

while(order=='Y')
{
newNode=(pDbLink)malloc(sizeof(DbLink));
printf("please input name,english grade,math grade\n:");
scanf("%s%d%d",newNode->name,&(newNode->en_g),&(newNode->math_g));
fflush(stdin);
newNode->prev=ptr;
newNode->next=ptr->next;
ptr->next=newNode;
printf("Create new node\n(Y/N):");
scanf("%c",&order);
fflush(stdin);
}
}

void ListTraverse(pDbLink L) /* 遍历打印链表 */
{
pDbLink p = NULL;
int i=1;

if(NULL != L)
p = L->next;
while(p)
{
printf("\n%d.name:%s,english grade:%d,math grade:%d\n",
i,p->name,p->en_g,p->math_g
);
p=p->next;
i++;
}
}

void DelNode(pDbLink *L,int num) /* 删除某结点 */
{
pDbLink p;
int i=1;

p=(*L)->next;
for(;p&&i<num;i++)
{
p=p->next;
}
if(NULL == p)
{
printf("Error!Delete position error!\n");
return ;
}
p->prev->next=p->next;
if(NULL != p->next)
p->next->prev=p->prev;
free(p);
printf("Success to del.\n");
}

void alterNode(pDbLink *L,int num) /* 修改结点值 */
{
pDbLink p;
int i=1;

p=(*L)->next;
for(;p&&i<num;i++)
{
p=p->next;
}

printf("\n%d.name:%s,english grade:%d,math grade:%d\n",
num,p->name,p->en_g,p->math_g
);
printf("the value to alter \n:");
scanf("%s%d%d",p->name,&(p->en_g),&(p->math_g));
printf("Success to alter.\n");
}


void DestroyList(pDbLink *L) /* 销毁链表 */
{
pDbLink p,q;
p=(*L)->next;

while(p)
{
q=p->next;
free(p);
p=q;
}
free(*L);
printf("Success to destroy Double Link List.\n");
}

void InsertList(pDbLink *L,int num)
{
pDbLink p,newNode;
int i=1;

p=(*L)->next;
for(;p&&i<num;i++)
{
p=p->next;
}
if(NULL == p)
{
printf("Error!Insert position error!\n");
return ;
}
newNode=(pDbLink)malloc(sizeof(DbLink));
printf("please input name,english grade,math grade\n:");
scanf("%s%d%d",newNode->name,&(newNode->en_g),&(newNode->math_g));

newNode->prev=p;
newNode->next=p->next;
if(NULL != p->next)
p->next->prev=newNode;
p->next=newNode;

printf("Success to insert the node.\n");
}

int menu(int *pOrder)
{
printf("============★★================\n");
printf("====== 1.Create a List ==========\n");
printf("====== 2.Insert a Node ==========\n");
printf("====== 3.Delete a Node ==========\n");
printf("====== 4.Alter a Node ==========\n");
printf("====== 5.Print the List =========\n");
printf("====== 6.Destroy the List =======\n");
printf("====== 0.exit the program =======\n");
printf("============★★================\n");
printf("please input the order\n:");
scanf("%d",pOrder);
return *pOrder;
}

void main()
{
int number;
pDbLink list;
int order = 0;

InitList(&list);

while(menu(&order)){
switch(order)
{
case 1:
CreateList(&list);
break;
case 2:
printf("input the number to insert\n:");
scanf("%d",&number);
InsertList(&list,number);
break;
case 3:
printf("input the number to delete\n:");
scanf("%d",&number);
DelNode(&list,number);
break;
case 4:
printf("input the number to alter\n:");
scanf("%d",&number);
alterNode(&list,number);
break;
case 5:
ListTraverse(list);
break;
case 6:
DestroyList(&list);
list = NULL;
break;
case 0:
break;
default:
continue;
}
}
}
[解决办法]
c语言中只能用*不能用&，&在c＋＋中为引用，在ANSIc中未定义