added text and example for gdb
Create factorize_example.md
Update factorial.cpp
Update and rename factorize_example.md to factorial_example.md
Update factorial_example.md
Added code for segfault example
Merge branch 'gdb' of https://github.com/barbagroup/teaching-materials into gdb
Create segfault_example.md
Update factorial_example.md
Update gdb_intro.md
Merge pull request #5 from barbagroup/gdb

Gdb