Question

9. Complete this table. Make sure all cells that contain numbers are filled.

PSEUDO-CODE INSTRUCTIONS	X	Y	Z
X := 7
Y := -12
Z := 13
IF (X + Y + Z) <> X*Y THEN
BEGIN
X : = (X – Y) ÷ X
Y := X – 3 * Y
Z : = X + 5
END
IF (X - Y + Z) <> X +Y THEN
BEGIN
X : = 2 * (X – Y) ÷ X
Y := X – 3 * Z
Z : = X – 2
END

10.

X := 12
Y := 15
Z := 5
Z := X
X := Y
Y := Z

The above sequence of commands will exchange the values in the variables, resulting finally in  
X= _____;    Y = ______;         Z = __________

11.

W:=7
U:= 2
W:= 5 + (W*(W + U÷W) + 2)÷2
T := W +1

The above sequence of instructions will store _                   in T                                 

         

12.             

X := 3
X := 2*X - X                          
X := 2*X + X
X := 2*X - X                
X := 2*X + X
X := 2*X - X
X := 2*X + X                                  
Y := 2*X + 1

The above sequence of instructions will store   ________     in Y.

13. What is the purpose of writing the following algorithm:

T := N1
IF N2 < T THEN
BEGIN
T := N2
END
IF N3 BEGIN
T := N3
END
Z := T

(a.).    To assign the lowest value to Z        
(b.)    To assign the highest value to Z

14. What does the programmer want to find out from the following algorithm:  

IF 2*(X÷2) = X THEN
BEGIN
EVEN := 1                  
END
IF 2*(X÷2) <> X THEN
BEGIN
ODD:= 1
END

_______________

15.
Complete the following table. Make sure all cells with numbers are filled.

INSTRUCTIONS	X1	X2	X3	TEMP
X1:= 7
X2:= 2
X:3= 10
IF X1 < X2 THEN
BEGIN
TEMP := X1
X1 := X2
X2 := TEMP
END
IF X2 < X3 THEN
BEGIN
TEMP := X2
X2 := X3
X3 := TEMP
END

Answer 1