main()
{

display1();
getsubjectcodes&database();

display2();

getTimetobeblocked();
getTimetable();
display timetable();

}

display FigA();
display FigB();

displayTimetable (pass in timetable)
{

display();

return 'next' or 'end';

}

getTimetable()
{

get structure
sort and get possible timetable
once a timetable is out

call displayTimetable();

if displayTimetable returns 'next'
{

continue sorting;
once a possible timetable is out

call displayTimetable();

}
if displayTimetable returns 'end'

exit from program;

}
getsubjectcodes&database()
{

read in subject codes keyed in by user as strings;
count total number of subject codes;

for (i=0; i<totalnumber; i++)
{

read subject code;
compare subject code with database;
if (have subject code's timetable)
{

get indexNo;
get lecture1;
get lecture2;
get lecture3;
get tutorial1;
get tutorial2;
get lab1;
get lab2;

}
i++;

}
getTimetobeblocked()
{

get Day;
append to structure
get Time;
append to structure
get next;

}