0
stddef.h and vadefs.h are two of the many "primitive" headers which are often required in the majority of your programs, but there are many other more specialised headers, such as iostream, which will include these anyway, so you generally won't need to explicitly include them.
What else can I help you with?
Why need to declare header files compulsory in c plus plus but not in c?
The need to declare header files is not compulsory in C++. You may place all your code in a single source file if you so desire. However, header files are useful in that they separate interface from implementation and aid in hiding information.
Is there any shortcut in compilers to find required header files for particular function in c c plus plus also does all the compilers have same header files?
You can find a detailed guide on CC plus on geany.org/manual/current/
How to change the project settings of a VC plus-plus program to use other external header files and link libraries?
Project - Settings - Link Tab Click on folder that has header files and librarys in the tree view Push OK
A program in c plus plus will run without an extension name CPP?
Yes. cpp is merely a convention to differentiate C++ source code from C source code, just as hpp is used to differentiate C++ header files from C header files (*.h). But they are just conventions, not rules: you can use any extension you like for both header and source files. For example, there's nothing to prevent you using the cpp extension for a header file. However, using the conventions makes it much easier to organise and recognise your files.
Which header file is used for main function in cand c plus plus languages?
None. PS: The most common headers files are probably: stdio.h stdlib.h string.h
How do you include classes and structures in header files in c plus plus?
Classes and structures can be put in a header file the same way you would use them in a main program; the only difference is that they are placed in a separate file, called a header file. Then, after creating a new file, include that new file with the definition by the use of the preprocessor #include statement.
What do you mean by forward declarations in c plus plus?
A forward declaration is simply a declaration of an identifier that will be defined at a later point during compilation. It is quite common to separate declarations from their definitions using header files (.h) and source files (.cpp). The header essentially contains all the forward declarations of all the definitions contained in the source file. It is also common practice to use forward declarations when a header contains pointers to a type, rather than references. If it includes references, then you must include the header file for those references, but if they are pointers then you only need a forward declaration of the type (before it is used) and the actual header that contains the full declaration can be included in the source file instead.
How do you use conioh header in c plus plus?
just as you do it in C.
How do you correct the C plus plus programming error missing function header?
You need to #include the header file that contains the missing function's declaration.
How do you begin a page of C plus plus coding?
It depends whether you are writing a header or a source file. Generally you will begin with the header, and this should always begin with a header guard: // file: my_header.hpp #ifndef _MY_HEADER_HPP_ #define _MY_HEADER_HPP_ //... // header code goes here // ... #endif _MY_HEADER_HPP_ Although the opening header guard should always be placed first, it's a good idea to precede the header guard with a multi-line comment briefly explaining the purpose of the header and its contents, as well as the author's contact details and any required copyright notifications. The header code will include any other required headers as well as any required forward declarations, followed by its own declarations. You may also include definitions for those declarations, however its generally best to keep implementation details separate from the declarations. The only exceptions are when declaring class templates, which must be completely defined in the header, or when defining implicit inline functions. The corresponding source file must include the header file, along with any other header files for its forward declarations, before defining the implementations of the header's undefined declarations. Other files that require those definitions need only include the corresponding header file.
What is the header file for getchar in c plus plus?
I think its in conio.h or stdio.h
How do you add a new library for Dev C plus plus?
If you want to know about adding new header files, then it is simple. Write your functions in a file. Save that file with extension .h in the include directry. Now, you can include this file using the #include directive
