How to Use BO Demos. ©2002, Jedidiah R. Crandall, Susan L. Gerhart, Jan G. Hogle.  http://sfsecurity.pr.erau.edu
2 – input text box
The input text box is enabled whenever a gets() function is being executed (library functions are not treated as separate subroutines in this applet).  When it is enabled you may activate it and give input to the program by typing into the input box.  The text box will ignore all non-alphabetic characters (‘1’, ‘?’, ‘~’, etc.) and will covert all lower case characters to upper case before passing the input on to the program.