Line-by-Line Output

Line-by-Line Output is a foundations skill: small programs, contest I/O, and interviews all assume you can use it fluently.

Why this shows up in the real world

Automation scripts, data prep, and education platforms print and read text the same way you learn here.

Core idea (explained for students)

Write the smallest correct program first, then match required spacing, newlines, and boundary cases from the statement.

Try this in Python

for word in ['hi', 'there']:
    print(word)

Common mistakes

• Mixing input() vs sys.stdin in the same template.
• Forgetting strip() on lines with trailing spaces.

Key takeaways

• Read the output format literally—spaces and newlines are part of the answer.
• Trace one tiny example by hand before coding.