Name Mangling and Extern "C" in C++ Concept

We know that the C++ programming language is robust and is a widely used programming language in the industry for gaming console development. It supports the overloading functionality, which means a with different parameters, we can have functions defined with the same name where the compiler will be capable enough to map them into separate entities.

In contrast, the parameters are other, and the function names are the same. Here, we use the name mangling method to map the functions with the same name and make the compiler understand them as different objects. This method adds additional information to the tasks, which will differ. Thus, the local or the online compiler will run them without confusion.

C++ Code

Output:

G ++ / t m p/F mT y bF gU rL. cpp
/usr/bin/ld: cannot open output file a.out: Permission denied
collect2: error: ld returned one exit status 

C++ Code

Output:

G ++ / t m p/F mT y bF gU rL. cpp
/usr/bin/ld: cannot open output file a.out: Permission denied
collect2: error: ld returned 1 exit status

C++ Code

Output:

g++ /tmp/FmTybFgUrL.cpp
/usr/bin/ld: cannot open output file a.out: Permission denied
collect2: error: ld returned 1 exit status

Extern "C" in C++ Programming Language

C++ Code

Output:

G ++ / t m p/F mT y bF gU rL. cpp
javaTpoint.com

C style Declarations in stdio.h, string.h Files

C++ Code

Output:

G ++ / t m p/F mT y bF gU rL. cpp
/usr/bin/ld: cannot open output file a.out: Permission denied
collect2: error: ld returned 1 exit status