[Solved] C++ Using Object with pass function [closed]

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GradeBook::Grade is a non-static member function, it needs to operate on an instance of GradeBook. You can’t pass it in to a function expecting a plain function pointer.

You could change TESTobj::SET to accept std::function objects, then wrap your member function in a lambda:

void TESTobj::SET(std::function<void()> nu)

void GradeBook::Set()
{
    OBJ.SET([this](){Grade();});
    OBJ.Test();
}

solved C++ Using Object with pass function [closed]