Rewrite Chapter 5 Global variables
Merge branch 'master' of https://github.com/Jonathan2251/lbd
Merge branch 'master' of https://github.com/Jonathan2251/lbd
Merge branch 'master' of https://github.com/Jonathan2251/lbd
Merge branch 'master' of https://github.com/Jonathan2251/lbd
Merge branch 'master' of https://github.com/Jonathan2251/lbd
Merge branch 'master' of https://github.com/Jonathan2251/lbd
Merge branch 'master' of https://github.com/Jonathan2251/lbd
Merge branch 'master' of https://github.com/Jonathan2251/lbd
Merge branch 'master' of https://github.com/Jonathan2251/lbd
Merge branch 'master' of https://github.com/Jonathan2251/lbd
Merge branch 'master' of https://github.com/Jonathan2251/lbd
Merge branch 'master' of https://github.com/Jonathan2251/lbd
Merge branch 'master' of https://github.com/Jonathan2251/lbd
Merge branch 'master' of https://github.com/Jonathan2251/lbd
Merge branch 'master' of https://github.com/Jonathan2251/lbd
Merge branch 'master' of https://github.com/Jonathan2251/lbd
Merge branch 'master' of https://github.com/Jonathan2251/lbd
Merge branch 'master' of https://github.com/Jonathan2251/lbd
Merge branch 'master' of https://github.com/Jonathan2251/lbd