added markdown
Add while loop to bash
add xiaoqi's translation
add special characters to c
Add print formatting characters
Add more to string formatting.
Add getchar(), putchar(), EOF to C
Add clarity to EOF. Add %ld for longs in C
Add note about loops C
Add more shorthand notes, array notes to C
Add ASCII chars to Types of C file.
Add function prototype to C.
Clarified function call by value description.
Add more notes to null character in C
Add more notes to function prototype in C.
Add extern notes to C.
Add more escape sequences to C.
Add enum to C.
Add clarity to characters in character set.
Add <ctype.h> include statement to popular C standar libraries.