int main(void)

Im a pretty new C++ programmer, but i'm learning very quickly. Id like to know what:

Code:

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int main(void)

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and how it is different from

Code:

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main()

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what does it do that main() cant do.

int main(void)
This declares that main returns an integer. main() should always return an integer.
This is optional, it'd be the same if you left it out... included for clarity

As for just plain main(), it looks like a syntax error to me. No return type.

Quote:

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Originally posted by Eibro
int main(void)
This declares that main returns an integer. main() should always return an integer.
This is optional, it'd be the same if you left it out... included for clarity

As for just plain main(), it looks like a syntax error to me. No return type.

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in c, main () is the same as int main (), because a function with no return type is implicitly assumed to return int