This is the game that is implemented: http://www.cs.uni.edu/~wallingf/teaching/cs3530/resources/knuth-mastermind.pdf
Run project with make from a terminal:
make clean
make all
make run
a sensible input length would be 4 and possible values 5, so type 4 and then 5 to cin. However, the algorithm changes according to how big these values are so it doesn't take too much time (hopefully)