Name "main::student1" used only once: possible typo at fancyvars.pl line 8.
Name "main::student2" used only once: possible typo at fancyvars.pl line 9.
Name "main::student4" used only once: possible typo at fancyvars.pl line 11.
Name "main::student3" used only once: possible typo at fancyvars.pl line 10.
1: value of student1 is alex
2: value of student2 is mary
3: value of student3 is bob
4: value of student4 is alice