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Challenge 4.1

Count dots on 5 black and white cards (without a loop)

Challenge Level: Growing experience

Requirement:

Write a program that asks the user to enter 5 black and white cards representing bits ('B' for black and 'W' for white which are entered one at a time) and displays the total number of dots as the output.

Hints
  • Make a variable called “total number of dots” and set it to 0. Add the corresponding number of dots (16 for the first input, 8 for the second input and so on) to the “total number of dots” every time the end user enters ‘W’ as the input. You would need to use 5 'If' blocks for this challenge.
  • Use the 'Set variable to' block to set the value of your new variable. Use the 'Add' block under “Operators” to add to the value of your variable.
  • The 'If' block checks if the condition is true and then runs the blocks inside of the if block.
Programming Reminders

Output statements

Output a string directly
Blocks showing how to output a string
Output a variable
Blocks showing how to output a variable

Variables

Set a variable as a string
Blocks showing how to set a variable as a string
Set a variable as an integer
Blocks showing how to set a variable as an integer
Set a variable from a calculation
Blocks showing how to set a variable from a calculation
Set a variable from a user input (text)
Blocks showing how to set a variable from a user input (text)
Set a variable from a user input (number)
Blocks showing how to set a variable from a user input (number)
Add one to a value
Blocks showing how to add one to a value

Conditionals

Find out the discount on fruit
Blocks showing how to use conditional blocks

Loops

Output string 10 times
Blocks showing how to output a string
Output number until number reaches 10
Blocks showing how to output a string
Recommended Blocks
Number block
String block
Ask and wait for text block
Say block
Add block
Equality block
Set variable to block
Custom variable block
If block

Create your program in the editor below

Your submission results will be displayed here

Input Expected output Received output Status
B
W
B
B
W
9

                
Not yet run ?
B
B
B
B
B
0

                
Not yet run ?
W
W
W
W
W
31

                
Not yet run ?