* [http://ehren.wordpress.com/2009/09/20/building-gcc-from-trunk/ Ehren Metcalfe: Building GCC from trunk]

* [http://opp344-yxue.blogspot.com/2009/09/oop344_20.html Yong Xue: oop344]

* [http://franksun123.blogspot.com/2009/09/challenge-of-void-iodisplayconst-char.html Dong Sun: challenge of void io_display(const char* str, int row, int col, int len)]

* [http://satijas.wordpress.com/2009/09/19/challenge-2-oop344/ Sasha Atijas: Challenge 2 OOP344]

* [http://drozhkov.blogspot.com/2009/09/void-getintchar-strint-int-val.html Dmitriy Rozhkov: void GetInt(char *strint, int val)]