CS 101 - 9/27/11

Thursday: Exam 1 during lecture

22 questions

20 multiple choice (3 pts each, total 60 points)

    Scan tron answer sheets => #2 pencil!!!!
    Answers: a,b,c,d,e

    trace code
      variables
      types
      assignments and operators: + - * /  7/2 7.0/2.0  %
      while loops (relational operator)
      methods (parameters)

    general knowledge
      setup of Java programs
      programming style
      use of turtles
      

2 write code - both doing turtle drawings

   #21 - write code
           make sure variables are declared and
             initialized

   #22 - write method: draw shape using a loop
        first line:
          public static void q22 
             ( Turtle tparam, int width, int height )
            {
              // write the needed code
            }


While loop:

   int counter;
   counter = 0;
   int counter2 = 0;

   while ( counter < 10 )
     {
      ....
      counter = counter + 1;
     }


Tuesday 11:59 pm 
  Extra credit for writing a multiple choice question
  in Blackboard.

  1% added to end of semester grade








What is the value of z when the following code finishes its
execution?

int x = 0;
int z = 0;

while ( x <= 4 )
{
z = z + x;
x = x + 1;
}

a. 4
b. 5
c. 6
d. 7
e. None of the above

Create a variable table:

x: 0 1 2 3 4  5
z: 0 0 1 3 6 10


int x = 5;
int y = 0;
int z = 0;

while ( x > 0 )
{
y = y + z
z = z + y;
x = x - 1;
}

a. 4
b. 5
c. 6
d. 7
e. None of the above


System.out.println ("The answer is: "  + 5 + 7 );