C++ Programming and Technical Programming Technical

What do you mean by internal linking and external linking in c++?

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When you write an implementation file (.cpp or .cxx or something ). your compiler generate a translation file .this is the your implementation file plus all the header you #included.interenal linking refer to all the linking of transaction unit.
external linking refer to thing exist beyond a particular translation unit.
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A global variable has external linkage by default. Its scope can be extended to files other than containing it by giving a matching extern declaration in the other file.
The scope of a global variable can be restricted to the file containing its declaration by prefixing the declaration with the keyword static. Such variables are said to have internal linkage.
8 years agoHelpfull: Yes(0) No(0)

C++ Other Question

Generate random number Which of the following statements is incorrect?
A. Friend keyword can be used in the class to allow access to another class.
B. Friend keyword can be used for a function in the public section of a class.
C. Friend keyword can be used for a function in the private section of a class.
D. Friend keyword can be used on main().