KwickClips C · 43 sec · free
What does printf("%d", 2.5) print?
Short answer. A rubbish number. Use %f for decimals.
Which function needs &?
scanf.
Wrong vs right
| Wrong | Right |
|---|---|
| scanf(... x) | scanf(... &x) |
| %d for 2.5 | %f for 2.5 |
| "Hi" | "Hi\n" |
Remember
| & in scanf |
| Match the specifier |
| End with \n |
Your C program prints rubbish. Check these three mistakes. Here are the three. Put ampersand before scanf variables. Use percent f for decimals. End lines with backslash n. Ampersand in scanf. Match the specifier. End with a new line.
This clip is from the full lesson: Input and Output in C: printf and scanf — 7 minutes, with the tables, the quick answers and the whole lesson in text.
Useful for: GSEB Std 10 Computer Studies, Programming All levels C
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Does getchar need a format specifier?41 secDisclaimer. KwickAcademy is free study material for general learning and revision. Parts of it, including the voice-over, are produced with the help of AI tools and may contain errors; if you spot one, please tell us and we will correct it. Syllabus, marks and exam details follow the latest official board publications available to us, and boards can change them at any time, so always confirm against your board's official website and your school. Using this material does not guarantee any marks or result. Board names and trademarks belong to their owners; Kwickprep is not affiliated with or endorsed by any examination board. We never ask for passwords, OTPs or ID numbers. Your progress is saved only in this browser. Full disclaimer · Privacy