TM 111 Programming Program Scratch Code Project

She requires a when[space]key_pressed
script that will take a word from the user and display a new word that is the same as the original except that all letters in the second half of the alphabet (n to z inclusive) have been removed.

The user should input the word as a single string and the new word that is displayed should be a single string.

For example, if the user enters

‘rhinocerous’

then

‘hice’

is displayed.

One way to think about creating the new word for display is to start with the new word as an empty string and then work through the letters in the original word from first to last, creating the new word incrementally. This might be visualised as in Figure 2.

• a.Create and write down an algorithm to solve this problem. You might like to use the ideas above, or alternatives of your own

• b.Create a when[space]key_pressed script to implement your algorithm. Depending on your algorithm and the way in which you choose to implement it, you may also decide to have a when_green_flag_clicked scriptaa

• add to it two tests you would perform to check whether the completed program fulfills the specification. (Several tests might be appropriate: you are only required to add two

C)
Test
Number
Test Purpose
Inputs Word
Expected Results
New word Displayed
1
2
calf
Pro
calf
“Blank”
No letters in the second half of alphabet
No letters in the first half of
the alphabet
Some letters in the first half of
the alphabet
3
Man
Ma
OUBuild
File Edit
1 of **
Scripts
TM111
Costumes
Sounds
v2.0.7
user_word man
Motion
Looks
new_word man
Sound
Events
Control
Sensing
Operators
More Blocks
when
clicked
i4
Pen
Data
forever
current_lettern
man
Make a Variable
wait until key space pressed?
ask Please enter a word: and wait
a
current_letter
set user word to answer
set new_word to
✓
new_word
set i to 1 1
✓
user_word
repeat until
i > length of user_word
set current_letter to o O
set current_letter to letter i of user_word
i
change current_letter by 1
if
current_letter < n then show variable current_letter set new_word to join new_word current_letter hide variable current_letter X: 29 y: 158 change i by 1 New sprite Sprites i Make a List say new_word Stage Owl 1 backdrop New backdrop: