INTERVIEW QUESTIONS MICROSOFT VC++ DETAILS

Question: What You Should Include in a Header File

Answer: August 30th, 2009 by sd | Posted in Uncategorized

A header file should begin and end with #include guards to guarantee that it’s not #included more than once during the same compilation session. A typical #include guard looks as follows:
// from stdlib.h
#ifndef STDLIB_INCLUDED // included for the first time?
#define STDLIB_INCLUDED

// declarations, typedef’s etc.

#endif // close #include guard at the end of the file

Inside the header file, you may insert function prototypes, structs declarations, #define macros, enum types, typedef’s, class declarations, extern declarations of global objects, template classes and functions, constants, certain #pragma directives that control the compilation process and similar macro directives. Note, however, that a header file should never have definitions (except for macros and templates). In other words, you shouldn’t implement functions and class member functions inside a header file (except for inline functions), nor should you create variables, arrays, and object or global variables in a header file.
VC++ FAQ’s And Interview Questions and Answers

Popularity: 6% [?]

August 30th, 2009 by sd | Posted in Uncategorized

A header file should begin and end with #include guards to guarantee that it’s not #included more than once during the same compilation session. A typical #include guard looks as follows:
// from stdlib.h
#ifndef STDLIB_INCLUDED // included for the first time?
#define STDLIB_INCLUDED

// declarations, typedef’s etc.

#endif // close #include guard at the end of the file

Inside the header file, you may insert function prototypes, structs declarations, #define macros, enum types, typedef’s, class declarations, extern declarations of global objects, template classes and functions, constants, certain #pragma directives that control the compilation process and similar macro directives. Note, however, that a header file should never have definitions (except for macros and templates). In other words, you shouldn’t implement functions and class member functions inside a header file (except for inline functions), nor should you create variables, arrays, and object or global variables in a header file.
VC++ FAQ’s And Interview Questions and Answers

Popularity: 6% [?] Source: CoolInterview.com

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