Multiple structures containing eachother instance

Question

For the assignment, I need to declare several structures, no problem. They are declared as:

typedef struct struct1{ struct2* object; } typedef struct struct2{ struct1* object; } // functions using both struct1 and struct2 parameters 

Of course, this will give me an error since struct2 is not declared before struct1. So I tried to declare this in advance by setting

 struct struct2; 

up. However, this requires me to call the object inside the struct1 block as

 typedef struct struct1{ struct struct2* obj; } 

The functions of this structure will be used when using the parameters struct1 * and struct2 * and will be tested as such (including the constructor). Using the struct tag, as in the example above, will give me countless errors. Does anyone know how to fix this?

Answer 1

 typedef struct s2 struct2; typedef struct s1 { struct2* object; } struct1; struct s2 { struct1* object; };