Predict the result Question 33 -35 are programs expressed as English statements.
ID: 3925963 • Letter: P
Question
Predict the result
Question 33 -35 are programs expressed as English statements. What would each display on the screen if they were actual programs?
33. The variable x starts with the value 0.
The variable y starts with the value 5.
Add 1 to x.
Add 1 to y.
Add x and y, and store the result in y.
Display the value in y on the screen.
34. The variable j starts with the value 10.
The variable k starts with the value 2.
The variable l starts with the value 4.
Store the value of j times k in j.
Store the value of k times l in l.
Add j and l, and store the result in k.
Display the value in k on the screen.
35. The variable a starts with the value 1.
The variable b starts with the value 10.
The variable c starts with the value 100.
The variable x starts with the value 0.
Store the value of c times 3 in x.
Add the value of b times 6 to the value already in x.
Add the value of a times 5 to the value already in x.
Display the value in x on the screen.
Find the Error
36. The following pseudocode algorithm has an error. The program is supposed to ask the user for the length and width of a rectangular room, and then display the room’s area. The program must multiply the width by the length in order to determine the area. Find the error.
area = width x length.
Display “What is the room’s width?”.
Input width.
Display “What is the room’s length?”.
Input length.
Display area.
Explanation / Answer
33) 7
34) j = k*j so j will be 20
l = k*l so l will be 8
k = j+l so k is 28
The value 28 is displayed.
35) a=1,b=10,c=100,x=0
c= 3*x, so c = 0
x += 6*b, so now x will be 60
x += a*5, so now x will be 65
The value 65 is displayed.
36) The area is that the area is calculated before the values of length and width are read from input.