void main()

[Cerburos]

What is void main(), and why wont Dev-C++ allow it?

main must return an int value << says the error message

[CheesyBeefy]

main() is your main function, which will be run when the program is executed.

Apparently Dev-C++ requires an integral return, so change that line to: int main()

[Zaita]

void main(); isn't recognised as part of the C++ standard. int main(); is.

And it's MingW/GCC that is throwing the error, not Dev-C++. Dev-C++ is not a compiler.

[xjtufofo]

Executables would return a value after each run. I guess that's what return value of main is used for.

[Scipio]

The return-value normally says or the program is executed correctly. 0 means it is, other values means that someting has gone wrong