AGM 1

1             Which of the following is NOT a flowchart symbol?

• 
• 
• 
• 

2. 2. LIVES is a variable used in a game. The following script is used within the game.
   SET “LIVES” TO 3

        REPEAT UNTIL “LIVES” = 0

          IF <ENTER KEY PRESSED?>, CHANGE “LIVES” BY -1

          IF <SPACE KEY PRESSED?>, CHANGE “LIVES” BY +1

        LOOP AGAIN

       

        When the game is played, the enter key is pressed 2 times, followed by the space key once.

           What is the final value for “LIVES”?

• 0

• 1

• 2

• 3

3. 3 What does the following symbol represent in a flowchart?

• Decision

• Output

• Process

• Terminator

4 X and Y are variables in a program.

What value will Y have when the following program is been run?

 

SET X TO 20

SET Y TO 10

IF Y<X THEN DECREASE Y BY 20

ELSE INCREASE Y BY 10

• 0

• 10

• 20

• -10

5 P, Q and R are variables in a program.

What value will R have when the following program has been run?

 

SET P TO 20

SET Q TO 30

SET R TO 0

IF P > Q THEN INCREASE R BY 10

IF Q > P THEN DECREASE R BY 5

• -5

• 0

• 5

• 10

6 What is a variable?

• An operator that test the relation between two data.

• A computer memory that requires power to maintain stored data.

• It is a memory location set aside to store data such as numbers.

• A value which is used to compare stored data

7 Y and Z are variables in a program.

        What value will Y have when the following program has been run?

 

        SET Y TO 10. 

        SET Z TO 20.

        IF Y>Z THEN INCREASE Y BY 10

                              ELSE DECREASE Y BY 10

• 0

• 10

• 20

• -10

8 P and Q are variables used in a program.

What value will P have when the following program has been run?

 

SET P to 10

SET Q to 30
IF P>Q THEN INCREASE P by 5

             ELSE DECREASE P by 10

• 0

• 15

• 20

• 25

9       X is a variable in a program.

What value will X have when the following program has run? 

 

           SET X to 2

           IF X > 3 THEN INCREASE X BY 2

                       ELSE DECREASE X BY 2

• 0

• 2

• 3

• 4

10 Which of the following would be used to make a conditional loop?

• INPUT Y

• IF Y = 3 THEN

• REPEAT UNTIL Y > 5

• INCREASE Y BY 1