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rasmussen.meredith22 18h ago β€’ 0 views

Multiple Choice Questions on 'For' Loops for Elementary Students

Hey there, future coders! πŸ‘‹ Let's learn about 'for' loops in a super fun way. I've got a quick guide and a cool quiz to help you master this topic. Ready to jump in? πŸ’»
πŸ’» Computer Science & Technology

1 Answers

βœ… Best Answer

πŸ“š Quick Study Guide

  • πŸ”„ A 'for' loop is a way to repeat a set of instructions multiple times.
  • πŸ”’ It consists of three parts: initialization, condition, and increment/decrement.
  • πŸš€ Initialization: Sets up the starting value of a counter variable (e.g., $i = 0$).
  • πŸ’‘ Condition: Checks if the loop should continue (e.g., $i < 10$). The loop runs as long as the condition is true.
  • βž• Increment/Decrement: Changes the counter variable after each loop (e.g., $i++$ which adds 1 to $i$).
  • 🎯 The code inside the loop (between the curly braces `{}`) is executed repeatedly.
  • πŸ“ Example: `for (int i = 0; i < 5; i++) { System.out.println(i); }` This prints numbers 0 to 4.

πŸ’» Practice Quiz

  1. What is the main purpose of a 'for' loop?
    1. To define a variable.
    2. To repeat a block of code.
    3. To print text on the screen.
    4. To create a new program.
  2. Which part of the 'for' loop sets up the starting value?
    1. Condition
    2. Increment
    3. Initialization
    4. Loop Body
  3. What happens if the condition in a 'for' loop is always true?
    1. The loop runs once.
    2. The loop doesn't run.
    3. The loop runs forever.
    4. The program crashes.
  4. What does 'i++' do in a 'for' loop?
    1. Subtracts 1 from i.
    2. Adds 1 to i.
    3. Multiplies i by 2.
    4. Divides i by 2.
  5. How many times will the following loop run?
    for (int j = 0; j < 3; j++) { System.out.println(j); }
    1. 0
    2. 1
    3. 2
    4. 3
  6. Which of the following is the correct syntax for a 'for' loop?
    1. for i = 0; i < 10; i++ { }
    2. for (i = 0; i < 10; i++) { }
    3. for (int i = 0, i < 10, i++) { }
    4. for {int i = 0; i < 10; i++}
  7. What is the output of the following code?
    for (int k = 2; k <= 4; k++) { System.out.print(k + " "); }
    1. 2 3
    2. 2 3 4
    3. 3 4
    4. 2 4
Click to see Answers
  1. B
  2. C
  3. C
  4. B
  5. D
  6. B
  7. B

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