Latest C++ Aptitude Question SOLUTION: What do you mean by internal linking and external linking in c++?

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

Asked In C++ Tharambigai ramesh (9 years ago)

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Vinit  (8 years ago)

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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saikrishna  (8 years ago)

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.

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