There is probably no such contest because ANSI C is valid C++, so the best entries would most likely just be (poor C++ but acceptable (well sort of)) ANSI C, and there's already the IOCCC to deal with that. Another problem is lack of decent complier support (read: valid C++ code doesn't always compile on all ANSI/ISO C++ compilers), although gcc/egcs is getting better every release it seems...