You have an extra semicolon after int main() that shouldn't be there.
Delete that and your code should compile.
Also, Dev-C++ is really outdated (it was last updated in...2005, I believe?).
I would recommend getting the Orwell Dev-C++ version (http://orwelldevcpp.blogspot.com/ ) (which also includes a more up-to-date compiler) or find a different IDE.