Voting count
Counting machine for ballots cast.
A game show allows contestants to ask the audience to help them choose a correct answer to a question from four possible answers. Audience members each have a small hand-held terminal on which they can press one of four buttons labelled A, B, C or D. As the audience vote, their selection is appended to a list. Once the time for voting has ended the results are collated and displayed to the contestant.
Make
Write a program to output the total number of votes cast for each answer. The votes cast were: "A", "B", "B", "B", "B", "C", "C", "D", "A", "B", "A", "B", "A", "B", "D", "B", "C", "B", "B", "A".
Use this boilerplate code as a starting point:
Success Criteria
Remember to add a comment before a subprogram, selection or iteration statement to explain its purpose.
Complete the subprogram called `count_votes` that:
- Takes a parameter called `ballot` that is the list of the votes cast.
- Counts the number of votes for A, B, C and D. Any other data in the list is ignored.
- Returns a list of the results. Index 0 is the count for A, index 1 is the count for B, index 2 is the count for C and index 3 is the count for D.
Complete the `main program` so that:
- The `count_votes` subprogram is called.
- The results of the vote are output.
Typical inputs and outputs from the program would be:
Answer A: 5
Answer B: 10
Answer C: 3
Answer D: 2
Knowledge Organiser
Use these resources as a reference to help you meet the success criteria.
Programming guide:
Flowcharts:
Parsons:
Evaluate
Run the unit tests below to check that your program has met the success criteria.
Answer A: 5
Answer B: 10
Answer C: 3
Answer D: 2
Check that you have:
- Used comments within the code to describe the purpose of subprograms, conditions and iterations.
- Used meaningful identifier names. That means the names of subprograms and variables indicate what they are for.