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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