CS3 students, We are standardizing on C++11 standard of C++. However, the compilers on wasp/hornet/poseidon/neptune by default are using an earlier version of C++ standard. To enable C++ standard run the command as follows: g++ -std=c++11 To make it easier to type, here is what I put in my .bash_aliases file: alias c++="g++ -std=c++11" Thanks, -- Mikhail