broocrypt
asked on
Difference between "void main()" and "int _tmain(int argc, _TCHAR* argv[])"?
Hello. I am learning C++ and I am following a series of educational videos + some books. All these
books declare the main function as
void main()
However, when I downloaded and installed VC++ Express 2008 the default main declaration is
int _tmain(int argc, _TCHAR* argv[])
The programs run fine as well, but I really don't understand what's the difference, and it really bugs me the fact that I am using something I don't really understand. Adding to the confusion there's the fact that the videos I am
using use Microsoft Visual C++ as well (although I can tell it is not the 2008 version, probably an older one.)
So, basically what I would really know is:
1. The difference between the two declarations
2. Which one of the two should I consider "standard"
3. If there's really no standard to speak of, but it is something strictly linked to my actual development environment, which in this case is VC++ 2008 Express.
Thank you. :)
(By the way, just in case it wasn't already clear, I'm a beginner as a beginner could be.)
books declare the main function as
void main()
However, when I downloaded and installed VC++ Express 2008 the default main declaration is
int _tmain(int argc, _TCHAR* argv[])
The programs run fine as well, but I really don't understand what's the difference, and it really bugs me the fact that I am using something I don't really understand. Adding to the confusion there's the fact that the videos I am
using use Microsoft Visual C++ as well (although I can tell it is not the 2008 version, probably an older one.)
So, basically what I would really know is:
1. The difference between the two declarations
2. Which one of the two should I consider "standard"
3. If there's really no standard to speak of, but it is something strictly linked to my actual development environment, which in this case is VC++ 2008 Express.
Thank you. :)
(By the way, just in case it wasn't already clear, I'm a beginner as a beginner could be.)
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sunnycoder
Too slow :) ... sorry for the repeated points
Yes I agree with sunnycoder.
The only standard in C++ is
int main()
or
int main(int argc, char* argv[]) (if you want to pass in parameters through command line)
This (int _tmain(int argc, _TCHAR* argv[])) is Windows specific, and is specific to the Visual Studio environment only.
The only standard in C++ is
int main()
or
int main(int argc, char* argv[]) (if you want to pass in parameters through command line)
This (int _tmain(int argc, _TCHAR* argv[])) is Windows specific, and is specific to the Visual Studio environment only.
ASKER
Thank you everyone. Super clear now. It seemed unfair to give all the points to just one expert, since almost everyone added something to others' answers and viceversa. I divided them based on usefulness and effort. Hope you guys don't mind. Don't worry - as a beginner I will post a LOT more questions to gain points with. :))