Kasutatud materjal. Teodor Luczkowski. Baasteadmised programmeerimiskeelest C++ A. D. Marshall. Programming in C. UNIX System Calls and Subroutines using C. http://www.cs.cf.ac.uk/Dave/C/CE.html    The cplusplus.com tutorial. Complete C++ language tutorial http://www.cplusplus.com/doc/tutorial/index.html    The GNU C library http://www.gnu.org/software/libc/manual/html_node/