02/09/05  CISC181   9am

(1) Syllabus

(2) Web site:

homework assignment for Friday
review homework and attendance policies

(3) Who took CISC105?

    lab00 is optional for you
    lab01 is required for everyone
    printout of lab00 provided (only one that will be)
    lab00 and lab01 are both due next week
    amnesty on late penalties til end of drop/add

(4) "Which course to take" exercises
    Useful for everyone, even if you already passed 105
    (9:25 - 9:40)  

    Two programs written in fictional language;
    Can you figure out what they do?  Can you give better variable names?
    Can you add comments?
 

(5) Go over example 1 below


Before:

Example 1

integer w, x, y, z
y = 0
w = 0
read x               
while (y < x)        
  begin
  read z
  w = w + z
  y = y + 1
  end
print w              
end









After:

Example 1

// y<x is a boolean expression, either true or false

integer total, max, count, input   // declare four variables
count = 0                // initializing two of them
total = 0                // assignment statements
read max               // getting user input for variable max
while (count < max)    // loop count from 0 to the number inputted
  begin
  read input
  total = total + input
  count = count + 1
  end
print total      // better name for w: total of all the z's
end















We'll go over Example 2 next time

Example 2

procedure main
integer array x[10]
integer i, j
for (i = 1 to 10 step 1) read x[i]
call test (x, 10)
end

procedure test (x, j)
integer array x[j]
integer i
for (i = 1 to j step 1)
  if (x[i] < 0) print x[i]
end

(6) Hand in example 1 for attendance checking; keep the other copy
    to go over the array problem on Friday.


(7) Look at sample faren to celsius program

(8) Announce: Camera