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What is guaranteed to happen at least once in a do-while loop in C?

easy📝 Conceptual Q1 of 15
C - Loops
What is guaranteed to happen at least once in a do-while loop in C?
AThe condition is checked before the loop body
BThe loop may never execute
CThe loop body executes at least once
DThe loop variable is always incremented
Step-by-Step Solution
Solution:

  1. Step 1: Understand the do-while loop structure

    The do-while loop executes the loop body first, then checks the condition.

  2. Step 2: Identify what is guaranteed

    Since the body runs before the condition check, it always runs at least once.

  3. Final Answer:

    The loop body executes at least once -> Option C

  4. Quick Check:

    do-while loop body runs once [OK]
Quick Trick: do-while runs body before condition check [OK]
Common Mistakes:
  • Thinking condition is checked before first iteration
  • Confusing with while loop behavior
  • Assuming loop may not run at all

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