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.h files.

I guess this isn't a solo learn question but it's c++, any recommendations on tutorial s for making header files

13th Apr 2017, 9:13 PM
Adam Dewitt
Adam Dewitt - avatar
4 Respostas
+ 8
Here's an example, in your header you declare a class like this: (edit) forgot the #define HEADER_H under #pragma once #pragma once // add this at the top of your header so it can't be included more than once class MyClass { private: int somedata; public: MyClass(); void SomeMethod(); }; In your .cpp file you define your constructor and method: MyClass::MyClass() { } void MyClass::SomeMethod() { }
13th Apr 2017, 9:36 PM
Karl T.
Karl T. - avatar
+ 4
Header files contain your declarations, and source files contain your definitions. That's basically it. Notice that the header file contains header guards; this is so that you can include the header multiple times across different files without worrying about your declarations being include more than once. If you're using a modern compiler, you can also just use "#pragma once" at the top of the file. While non-standard, most compilers will support it. Here is an example of how you could use header/source files: In "Header.h": #ifndef HEADER_H #define HEADER_H class MyClass { public: int sum(int, int); } void freeFunction(); #endif In "Source.cc": #include "Header.h" #include <iostream> int MyClass::sum(int a, int b) { return a + b; } void freeFunction() { std::cout << "Hello, World!"; }
13th Apr 2017, 9:34 PM
Squidy
Squidy - avatar
0
or if any one can give me an example of using one with the cpp I could figure it out from there
13th Apr 2017, 9:15 PM
Adam Dewitt
Adam Dewitt - avatar
0
Use #ifndef + #define + #endif as the guy above suggested. #pragma once can lead to some problem related to naming.
14th Apr 2017, 1:16 AM
Denis Felipe
Denis Felipe - avatar