A C/C++ Function Call Puzzle

Consider the following program. Predict the output of it when compiled with C and C++ compilers.

void func()
    /* definition */
int main()

The above program compiles fine in C, but doesn’t compiler in C++.

In C++, func() is equivalent to func(void)
In C, func() is equivalent to func(…)

Refer this for details and this for more programs that compile in C, but not in C++.

This article is compiler by Rahul Mittalal. If you like GeeksforGeeks and would like to contribute, you can also write an article and mail your article to [email protected] See your article appearing on the GeeksforGeeks main page and help other Geeks.

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