KwickClips Java · 43 sec · free
Why does 7 / 2 print 3?
Short answer. Both values are int, so the decimal part is dropped.
How do you keep the decimal?
Make one value a double, like 7 / 2.0.
Types decide the answer
| Code | Type | Prints |
|---|---|---|
| 7 / 2 | int | 3 |
| 7 / 2.0 | double | 3.5 |
| 7 % 2 | int | 1 |
Remember
| int / int drops the decimal |
| Use a double to keep it |
| % gives the remainder |
Seven by two prints three in Java. Why? The types decide the result. Int by int drops the decimal. One double keeps it. Percent gives the remainder. Int by int drops decimals. Double keeps them. Percent gives remainders.
This clip is from the full lesson: ISC Class XI Java Revision in One Go — 7 minutes, with the tables, the quick answers and the whole lesson in text.
Useful for: ISC Class 12 Computer Science (868)
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