Linked Questions

Possible Duplicates: [C] Header per source file. In C++ why have header files and cpp files? C++ - What should go into an .h file? Is the only reason header files exist in C so a developer can quickly ...

Possible Duplicate: In C++ why have header files and cpp files? I don't quite get C++ header files, for two conflicting reasons: I thought the purpose of header files was in general to separate ...

I have only just started learning C++, and I see that functions are usually declared and defined separately, for example: // Declaration void sayhi(std::string name); // Definition void sayhi(std::...

Someone asked a question similar to mine here: Function declaration inside or outside the class? Why do you just declare a function inside a .h file but not the definition, and then write the whole ...

Possible Duplicate: In C++ why have header files and cpp files? Coming from a C# background, I find header files really annoying. Are they necessary even with C++11?

I was wondering if it is advisable to write a the whole class c++ in a header file ? and use include to include the class, in a similar way that java does its oop programming. Is it a bad style ? can ...

Possible Duplicate: In C++ why have header files and cpp files? I was reading some KDE tutorials for creating basic plasma widgets and other QT stuff. One thing that I noticed is almost all the ...

I wonder why recommended way is to #include<example.hpp> in example.cpp; I don't understand, how preprocessor (which seems to be quite simple program) knows that definition of methods are in ...

Possible Duplicate: In C++ why have header files and cpp files? C++ - What should go into an .h file? All the functions/methods which are usually defined in .cpp file can be defined inline in .h ...

So im trying to make a Die class and a LoadedDie class where the Die class is the base and the LoadedDie class is derived. The only difference between the 2 classes is that the roll function in the ...

I am a student programmer learning my first language with the book "Accelerated C++." I am at at a point where the author is explaining header files and source files containing functions. In the ...

When using multiple files in C++, for example: main.cpp, definition.cpp, declaration.h // declaration.h int Myfunc(); //definition.cpp #include "declaration.h" int MyFunc() {return 5;}; //...

Possible Duplicate: In C++ why have header files and cpp files? Why in C++ is there a .h and .cpp and not only one file like c# and Java ?

In C++, I've heard that you need to separate the implementation from the interface in order to reduce compile times. In this question, the answerer basically says that if you change the header then ...

I may be thinking/using header files the wrong way, but currently I'm using 1 .cpp file and the rest are all in header files. I have things like a screen which is an array of characters in a header ...

The header's file content is put where .h file is used. Why use add.h in add.cpp? In case without using header file add.cpp // There is not declaration int add(int x, int y); int add(int x, int y) { ...

I'm new to c++ and I have 'actually' learned a lot these past days. I just learned how to link multiple files today or what I think is called, using "headers". My question is related to headers and ...

I understand the header file contains all the prototypes of every function contained in the implementation file; but what is the real purpose? Is it because when another program calls on the class, it ...

I was working with sockets , and i noted that a lot of the code i wrote repeated in different programs , so i wrote functions for most of the stuff that i did and saved them in a ".c" file without a ...

So I have a problem when using a singleton Game class and the Story class. Game.hpp #ifndef GAME_HPP #define GAME_HPP #include <memory> class Phase; // Forward declaration class Game { ...

I'm learning C ++ and I have a question about header files. Are they only for classes? If I have some functions and want to use them in several files, should I write the declaration in the h file and ...

my first project in c++ (I use g++ on centos) from Python and c#, I use to split my program into few files, each class in different file. The most common reason i find, why use .h file, is ...

I been searching a lot lately about header files and stuff and i always see the same things, but i dont get something, why use the .h header file when you can just throw the code on the .cpp file? ...

Why is there a need to include the header file of a class into the implementation file of the same class?? Does it serve a purpose?? Since i thought it is needed only where we need to use that class.

I came across this implementation of some code which requires us to create a header and then #include it in our source code. So my question is why we need to create a .cpp file along with the .h and ...

When we write class in c++ we divide class into two part that header file and cpp file. In header file we define class and prototype Class.h class A{ public: void functionName(); }; Then we define ...

Comming from a mostly Java background I recently started learning a bit of C++. I'm trying to create a class that describes a LinkedList. Since I want this class to be something like an external ...

I'm having a general question about header files: In my project, which is not a library or plugin, but a standalone program, I don't use any header files - I am just using cpp files that I include in ...

I'm a beginner to C++ and I am getting extremely confused trying to understand the benefits of the recommended practices regarding headers and implementation files. Say I have two implementation ...

Hello i have a code like this in c++: #include <iostream> using namespace std; namespace exercises { class String; ostream& operator<<(ostream&, const String&); istream&...

I've been making websites and odd projects with Python and Javascript for about 4 years, and now I'm making the leap down to C/C++ for a new endeavor. Forgive me if my terminology is off, still ...

why we need header files instead of just define things in library files ? I'm asking this question because I recently read an article like this: While it is true that all definitions are ...

My question is regarding preprocessor and linking phase confusion in compilers (typically c++ compilers). From the online sources, its said that the compiler doesnt look at other source codes until ...

Suppose we consider math library functions in c language . declaration's are in header file #include whereas code is in math library (which we link during compilation by -lm) . Why both declaration ...

I've never really understood why C++ needs a separate header file with the same functions as in the .cpp file. It makes creating classes and refactoring them very difficult, and it adds unnecessary ...

When dividing your code up into multiple files, what exactly should go into an .h file and what should go into a .cpp file?

What considerations are there when deciding between defining a member function inside or outside the body of a class? In the class: class Clazz { public: void Fun1() { //do something ...

I happened to get that already defined in .obj error. This is structure of my project: main.cpp #include "main.h"; main.h #include <iostream> #include <string> #include <...

Consider this link. See this code: class MyClass { public: MyClass(); ~MyClass(); private: int _a; }; MyClass::MyClass() { } ...

I'm used to writing code without modules where the header files contain the function declarations like: // foo.h class Foo { void bar(); }; and the corresponding .cpp file contains the ...

Today I encountered a weird problem when trying to use IRremote library, and I managed to strip down the problem as following. If you have a folder in libraries, with Foo.h and Foo.cpp inside, and ...

How do I separate classes into multiple files? Here is my understanding so far: Create new class, and a ".h" and a ".cpp" file for it. You use #include classname.h in your main ...

I've got a C/C++ question, can I reuse functions across different object files or projects without writing the function headers twice? (one for defining the function and one for declaring it) I don't ...

I just have a quick question as I'm trying to understand how to compile (in ubuntu 12.04) a main in c++ that includes a simple header file. The command: g++ -o main main.cpp add.cpp -Wall Works ...

I understand and very much appreciate the practice of separating header (.h, .hpp) and source files (.cpp). However, many simple classes can be expressed entirely in the header file itself. I could ...

Hey.. I don't really get them. I read a tutorial about classes in C++, and I don't get a few things: In every example and tutorial that I've seen, functions are never written inside the class! For ...

I have a project, where I must connect to a library that is C based, and I was not able to get at the functions from C# using the DLLImport. I have to use a project that is C++/CLI based to surface ...

After tutoring a few students at a local college, I was asked "when is best to use a header file in C++ compared to a regular .cpp file?". I kind of struggled with the answer and was seeing if there ...

I would like to know the difference between header (h) and source (cpp) files. We usually use headers for declaration and cpp s for definition of non-template stuff, and 2 different headers for ...

I'm Java programmer and I'm new to C++ Programming. In java we have to write all classes in separate files and all method's definitions are right inside the class. But now in C++ I'm wonder that why C+...