The class code is fully described, but lower than the method call from this class. In fact, I have a truck that should be able to add itself to the loading queue at the base, and the base should be able to remove this truck from the queue after a number of frauds.

  • for a class, you can use a preliminary declaration and use this preliminary declaration to declare a pointer or a link to an instance of a class, as well as for inline methods of another class that will not use the "." and "->" from a link or pointer, respectively, does not work this way for functions, generally a strange question, as if you intend to declare different functions and classes in one hider, which is not particularly correct. - OlegUP

3 answers 3

Declare a class and its methods before the place where they are used. And determine after.

Class declaration :

class class_name { void method1(); };

Method definition :

 void class_name::method1() { // код метода }

In practice, individual classes are declared in class_name.h ( class_name.h ), and methods are defined in class_name.cpp . To add a class_name to another file, use the preprocessor include command:

 #include "class_name.h"

    I’ll add the user Andrey in response. First, it’s better to write the class name with a capital letter, and secondly, it’s advisable to write specifiers (public, protected, private), although it’s not necessary, the default is private, I just think that your method will be called by the client accordingly, it should not be private, but public:

     class ClassName { public: void method1(); };
    • one
      From which letter to write - large or small - depends on the style adopted in the team / company / project. - andrybak
    • one
      About public / private - the remark is correct. And about the register of beech, Andrew has already answered - this is a matter of style, personal or corporate. - skegg

    for a class, you can use a preliminary declaration and use this preliminary declaration to declare a pointer or a link to an instance of a class, as well as for inline methods DEFINED within the definition of another class that will not use the "." and "->" from a link or pointer, respectively, does not work this way for functions, generally a strange question, as if you intend to declare different functions and classes in one hider, which is not particularly correct.

     class Foo; class Bar { private: Foo* foo_; public: void setFoo( Foo* foo ) { // inline метод foo_ = foo; } };

    After a preliminary declaration, you can include a header with a full definition of the Foo class in the .cpp file for the Bar class methods