Muab qhov yooj yim, syntax hais txog cov qauv sau ntawv, hos semantics hais txog lub ntsiab lus. Syntax yog cov txheej txheem tsim nyog los xyuas kom meej ib kab lus yog grammatically raug; semantics yog li cas ib tug lexicon, grammatical qauv, suab, thiab lwm yam ntsiab lus ntawm ib kab lus coalesce los sib txuas lus nws lub ntsiab.
Dab tsi yog qhov sib txawv ntawm cov syntax thiab semantics?
Nyob rau hauv kev txhais lossis qhia meej cov lus programming, peb feem ntau paub qhov txawv ntawm cov syntax thiab semantics. Lub syntax ntawm ib hom lus programming piav qhia cov hlua ntawm cov cim uas suav nrog qhov program siv tau. Cov ntsiab lus ntawm cov lus programming piav qhia qhov kev siv tau siv tau zoo li cas, lawv ua dab tsi.
Kev sib raug zoo ntawm syntax thiab semantics yog dab tsi?
Semantics yog tus uas piav tau txhua yam thiab muab lub ntsiab lus; syntax xeeb raws li cov qauv, qauv sau ntawv, lexicon, suab, intonation, yog txhais tau tias kom nkag siab thiab piav qhia lub ntsiab lus; thiab pragmatics, uas ua rau semantics thiab syntax ua rau kev nkag siab, yog lub hom phiaj, qhov kawg (s), uas tuav ob qho tib si semantics thiab syntax.
Ib qho piv txwv ntawm kev hais lus yog dab tsi?
Semantics yog kev kawm txog lub ntsiab lus ntawm hom lus. Nws tuaj yeem siv rau tag nrho cov ntawv lossis rau ib lo lus. Piv txwv li, "destination" thiab "kawg nres" technically txhais tau tias tib yam, tab sis cov tub ntxhais kawm ntawm semantics txheeb xyuas lawv cov ntsiab lus hloov maj mam.
Dab tsi yog syntax thiab semantics hauvC programming lus?
•Syntax: the form or structure of the . expressions, nqe lus, thiab program units. •Semantics: lub ntsiab lus ntawm cov kab lus, nqe lus, thiab cov kev pab cuam units. •Syntax thiab semantics muab ib hom lus.
