Given the hash grades = { john: 85, jane: 92, joe: 78 }, which Ruby code correctly uses each to print each student's name and grade in the format Student - Grade?

hard📝 Application Q8 of 15

Ruby - Loops and Iteration

Given the hash grades = { john: 85, jane: 92, joe: 78 }, which Ruby code correctly uses each to print each student's name and grade in the format Student - Grade?

Agrades.each { |grade| puts "#{grade[0]} - #{grade[1]}" }

Bgrades.each { |student| puts "#{student} - #{grades[student]}" }

Cgrades.each { |student, grade| puts "#{student.capitalize} - #{grade}" }

Dgrades.each { |student, grade| puts "#{grade} - #{student}" }

Step-by-Step Solution

Solution:

Step 1: Understand hash iteration
When iterating over a hash with each, two block variables represent the key and value.
Step 2: Format output correctly
Use string interpolation to print the capitalized student name and their grade separated by ' - '.
Final Answer:
grades.each { |student, grade| puts "#{student.capitalize} - #{grade}" } -> Option C
Quick Check:
Hash each yields key and value [OK]

Quick Trick: Hash each yields key and value [OK]

Common Mistakes:

MISTAKES

Using only one block variable for hash iteration
Swapping key and value in output
Not capitalizing the key when required

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More Ruby Quizzes

Given the hash grades = { john: 85, jane: 92, joe: 78 }, which Ruby code correctly uses each to print each student's name and grade in the format Student - Grade?

Step 1: Understand hash iteration

Step 2: Format output correctly

Final Answer:

Quick Check:

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