Comment lines are limited to how many characters per line?

• A. 64 characters per line
• B. 32 characters per line
• C. 16 characters per line
• D. 128 characters per line

Answer: (B)

Line length limits keep comments compact and easy to read on constrained displays and in printed form. A 32-character per line cap prevents long, wrapped lines that can clutter a listing, making notes quicker to scan in source editors, robots programming terminals, and documentation. It also encourages concise wording and predictable formatting across tools that assume fixed-width text. If lines could be much longer, comments might spill onto multiple lines in awkward ways or force horizontal scrolling; if they’re too short, important details can’t fit in a single line and get fragmented. The 32-character limit strikes a balance by preserving readability and clean, uniform presentation. Longer limits like 64 or 128 can reduce readability on small screens and printers, while a limit as short as 16 would make meaningful comments impractical.