Question

Suppose I want something of this sort, in one .cpp source file:

class A {     public:         void doSomething(B *b) {}; };  class B {     public:         void doSomething(A *a) {}; }; 

Is there anyway of doing this without splitting it into two separate files, and without receiving a compiler error (syntax error on doSomething(B *b))

Answer 1

put at the first line:

class B;