CODEWITHSUNDEEP
c++static
Tahlil
Tahlil

Reputation: 2721

Declaring function as static in header file causes declared but not defined error

Suppose I have a header file like this

namespace a
{
    static void fun();
}

and I have its definition in source file

namespace a
{
    void fun()
    {
    }
}

This header file may be used in these files' own project or in several other projects. I get the the fun() function declared but not defined error. I don't understand why. But if I remove static from declaration, it works!

Upvotes: 0

Views: 1192

Answers (1)

Kevin Le - Khnle
Kevin Le - Khnle

Reputation: 10857

The static keyword in this case means that the scope of the function fun() is limited to the file, i.e. it has the file scope. Removing the static, it has a global scope, but only within the namespace.

Upvotes: 6

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