External Interfaces |
Description of Function pb_add
The pb_add
function takes one argument, the Properties
object pb_htable
. pb_add
uses disp
to prompt for an entry. Using the up-arrow (^
) character as a line delimiter, input
inputs a name to the variable entry
. Then, within a while loop, it uses input to get another line of the entry into variable line
. If the line is empty, indicating that the user has finished the entry, the code breaks out of the while loop. If the line is not empty, the else statement appends line to entry and then appends the line delimiter. At the end, the strcmp
checks the possibility that no input was entered and, if that is the case, returns.
function pb_add(pb_htable) disp 'Type the name for the new entry, followed by Enter.' disp 'Then, type the phone number(s), one per line.' disp 'To complete the entry, type an extra Enter.' name = input(':: ','s'); entry=[name '^']; while 1 line = input(':: ','s'); if isempty(line) break; else entry=[entry line '^']; end; end; if strcmp(entry, '^') disp 'No name entered' return; end;
2. Add the Entry to the Phone Book
After the input has completed, pb_add
calls put
on pb_htable
with the hash key name
(on which pb_keyfilter
is called to change spaces to underscores) and entry
. It then displays a message that the entry has been added.
pb_htable.put(pb_keyfilter(name),entry); disp ' ' disp(sprintf('%s has been added to the phone book.', name));
Description of Function pb_lookup | Description of Function pb_remove |
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