error: request for member '..' in '..' which is of non-class type?

Question

I have a class with two constructors, one that takes no arguments and one that takes one argument. Creating objects using the constructor that takes one argument works as expected. However, if I create objects using the constructor that takes no arguments, I get an error. For instance, if I compile this code (using g++ 4.0.1)... class Foo { public: Foo() {}; Foo(int a) {}; void bar() {}; }; int main() { // this works... Foo foo1(1); foo1.bar(); // this does not... Foo foo2(); foo2.bar(); return 0; } ... I get the following error: nonclass.cpp: In function ‘int main(int, const char**)’: nonclass.cpp:17: error: request for member ‘bar’ in ‘foo2’, which is of non-class type ‘Foo ()()’ Why is this, and how do I make it work?

Answer 1

Hello,

The statement `Foo foo2();` is being interpreted by the compiler as a function declaration, per theIf you remove the "()" (i.e. `Foo foo2;`), it'll work as you expect.