undefined reference to save::SaveManager::getKey()

[cold furnace]

i just get this error and i dont know why can somebody help me pls?
(ping me!)

[spring spade]

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@cold furnace

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[valid saffron]

your declarations need to be in the header file only

and your implementation in the cpp file only

you redefined the class in the cpp file

and the linker gets confused

[cold furnace]

what should i change now in the cpp file?

[valid saffron]

//header

class Dummy
{
  void func() const;
};

and

//cpp file
#incude "theHeader"

void Dummy::func() const
{
  //implement here
}

[cold furnace]

ok thank uvery much

!solved

[spring spade]

Thank you and let us know if you have any more questions!

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[valid saffron]

fix it first and show me that it works

[cold furnace]

it works tysm

[valid saffron]

your headers must have an include guard, to prevent duplicate includes from f*cking your build, write #pragma once at the 1st line, and try including your header twice in main.cpp