int _tmain(int argc, _TCHAR* argv[])

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What is the difference between _tmain() and main() in C++?

what is the difference between int _tmain(int argc, _TCHAR* argv[]) and int main(int argc, char** argv)?

I am not clear of the difference.

Answer 1

_tmain is the Microsoft-specific wrapper around "main()". You can use it with either 8-bit ASCII or 16-bit Unicode. Here's the MS documentation for it:

http://msdn.microsoft.com/en-us/library/6wd819wh%28v=vs.80%29.aspx

You can also use _tmain, which is defined in TCHAR.h. _tmain will resolve to main unless _UNICODE is defined, in which case _tmain will resolve to wmain.

Answer 2

_tmain is the unicode version of main. I think this is a MS only extension though.