What was Wrong with void main()?

Question

Why has setting the entry point\'s return type to void in C++ always been discouraged, and was later removed by the standard and is prohibited by modern compile

Answer 1

C++ has never permitted void main(), though some compilers might permit it either as an extension or just because they don't diagnose it.

Similarly C has never permitted void main() other than as an extension; the same 1989 standard that introduced the void keyword defined the two standard definitions for main: int main(void) and int main(int argc, char *argv[]).

Other languages permit it because, well, they're other languages.

There is no particular advantage in being able to write void main() rather than int main(). You don't even need to explicitly return a value; falling off the end of main is equivalent to return 0; (in C++, and in C starting with C99).