Glossary in C

• variable
  Variables store values used during the computation.
• function
  A function contains statements that specify the computing operations to be done.
  • main
main function is where your program begins executing.
  • printf
printf is a library function that prints output.
• argument
  Arguments are a list of values provided to communicate data between functions. Argument list can be empty.
• escape sequence
  An escape sequence provides a general and extensible mechanism for representing hard-to-type or invisible characters.
  • \n for newline

These glossaries mainly come from The C Programming Language, Second Edition.