二进制表达式的无效操作数（'struct node'和'struct node'）

Question

I have made a header file in which I have declared a struct node and made an object as List of that struct. Here is my header file link.h :

struct node   
{
    void *data;  //Generic data
    struct node *next;
}List;

Driver.c :

#include "link.h"
int main()
{   
    List list1;
    return 0;
}

When I am trying to write a statement like

List list1; //in the driver file

It throws up an error saying:

invalid operands to binary expression ('struct node' and 'struct node')

use of undeclared identifier 'list1'; did you mean 'List'?

What could be causing this?

Answer 1

Most probably your intention is to have List being an alias for struct node , so you need to use typedef , otherwise List is not a type but an instance variable of the struct.

typedef struct node   
{
    void *data;  //Generic data
    struct node *next;
}List;