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Define useful. useful synonyms, useful pronunciation, useful translation, English dictionary definition of useful. adj. 1. Having a beneficial use; serviceable: a useful kitchen gadget.
2. #define is used to define some of the text substitutions performed by the preprocessor. If you write. and then refer to foo in your program, all instances of the identifier foo will be turned into the number 417. (But foo4 will remain as foo4, for instance.) then an occurrence of twice(417) in your program will turn into 417,417.
From Longman Dictionary of Contemporary English use‧ful /ˈjuːsfəl/ S1 W1 adjective helping you to do or get what you want OPP useless useful information A little Japanese can be really useful. useful for The space under the desk is useful for storing CDs. useful to techniques that could be useful to teachers Can you come and make yourself useful (=help people to do something)? —usefully ...
Definition of useful adjective in Oxford Advanced American Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.
The meaning of HELPFUL is of service or assistance : useful. How to use helpful in a sentence.
HELPFUL definition: 1. willing to help, or useful: 2. willing to help, or useful: 3. giving help: . Learn more.
Useful Sentence Examples He has a useful gift. For someone who needs more power, it's a very useful talent. She was useful for now. He was the bravest and most useful man in the party. She spins, and does a great deal of fancy work, and reads, and leads a pleasant, useful life. Useful definition: Having a beneficial use; serviceable.
