Which is non class type

Is declaring a function called aux that takes no arguments and returns a Keyword. You most likely meant to write without the parentheses :. Concerning the next error you are getting, this is because you have a declaration of the constructor and destructor of your class, but not a definition. In fact, the error you are getting comes from the linker , and not from the compiler.

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Advanced Search. Results 1 to 2 of 2. Improve this answer. Edward Karak Mykola Golubyev Mykola Golubyev I don't understand why the compiler thinks : Foo foo2 as of function declaration, inside the main function. Apparently I've landed on this answer before since I can not upvote it again! Here is a textual 2nd upvote Parameterless function declaration should have mandated "void" parameter so that this usage would have been allowed from consistency point of view.

Rajesh: A void parameter list is not mandatory, it just means something different zero parameters from an empty parameter list unspecified parameters. Just for the record.. Just use Foo foo2; It will work. Reena Cyril Reena Cyril 3 3 silver badges 11 11 bronze badges. Matt Matt 6 6 silver badges 23 23 bronze badges.

This is the same answer as the one above — Greenonline. The most vexing parse isn't so much that the compiler misunderstood, as it is that the standard requires the compiler to interpret anything that might be a function declaration as a function declaration, to prevent ambiguity.

Specifically, between [stmt.