On the turing system, we are using a command shell known as "bash". The bash shell has a list of directories that it will search for Unix commands that you run. The instructions below will let you change that search path to include the current directory as the last place that bash will look.
cp /home/turing/t90hch1/.bash_profile .
This will copy a file called ".bash_profile" into your home directory.
source .bash_profile
From now on, you should be able to run your C++ executable programs without typing "./" in front of the program name, as long as your current directory contains the program you're trying to run.