C circular dependency

Question

I have this problem with circular dependency in C, I looked around the other questions about this topic but really couldn\'t find the answer.

I hav

Answer 1

This kind of dependency is broken using a forward declaration. Instead of including a file with the full definition of the struct, there are two alternatives:

1.

typedef struct 
{
    char* name;
    float x, y;
    struct _edgelist* edges; /* add "struct" here (elaborated type specifier) */
} vertex;

2.

struct __edgelist; /* better form: forward declaration */

typedef struct 
{
    char* name;
    float x, y;
    struct _edgelist* edges; /* still need to add "struct" here */
} vertex;