Compiler Error C4430: Missing Type Specifier - Int Assumed [Duplicate]

Name: Compiler Error C4430: Missing Type Specifier - Int Assumed [Duplicate]
Uploaded: 2026-09-27T10:57:02+00:00
Duration: 18 min 20 s
Description: I Have This Error: "Error C4430: Missing Type Specifier - Int Assumed. Note: C++ Does Not Support Default-Int" with This Code Example: //A. H #Include "B. H"...

Question

I have this error:

"error C4430: missing type specifier - int assumed. Note: C++ does not support default-int"

with this code example :

//A.h    
#include "B.h"
class A{
    B* b;
    ..
};

//B.h
#include "A.h"
class B{ 
    A* a; // error error C4430: missing type specifier - int assumed.
};

Accepted Answer

This is a circular dependency issue. For declaring a pointer to some class, the definition of the class is not needed; i.e. the type doesn't have to be a complete type. So you don't need to include A.h in B.h, forward declaration is enough. Such as:

//B.h
class A; // change the include of A.h to forward declaration
class B { 
    A* a;
};

Compiler Error C4430: Missing Type Specifier - Int Assumed [Duplicate]

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1 Answer

David Miller