Test task.
Example: convert abc to xyz having dictionary with abz, bbz, abx, xbz.
Only one letter can be changed per step.
Solution:
abc->abz->xbz->xyz
Build all
make
Build executable
make build
Build tests
make build_test
Run tests
make test
Run program with sample data (word.txt, dict.txt)
make run
Clean all
make clean