2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Nyob rau hauv C, lub tsev qiv ntawv muaj nuj nqi malloc yog siv los faib ib lub cim xeeb ntawm the heap. Qhov kev pab cuam nkag mus rau qhov thaiv ntawm lub cim xeeb ntawm tus taw tes uas malloc rov qab los. Thaum lub cim xeeb tsis xav tau lawm, tus pointer raug xa mus rau dawb uas deallocates lub cim xeeb kom nws siv tau rau lwm lub hom phiaj.
Puas malloc faib lub cev nco?
TL;DR: malloc xa rov qab qhov chaw nyob virtual thiab tsis faib lub cev nco.
Dab tsi ntawm lub cim xeeb Malloc siv?
malloc cov ntsiab lus rau lub cim xeeb uas tau faib los ntawm heap ntu ntawm RAM. Cov chaw nyob xa rov qab los ntawm malloc thiab cov haujlwm muaj feem cuam tshuam los ntawm txhua qhov chaw koj lub sijhawm ua haujlwm ib puag ncig siv rau kev nco zoo.
Nyob rau hauv qhov chaw ntawm lub cim xeeb Malloc thiab calloc faib lub cim xeeb?
Lub npe malloc thiab calloc yog lub tsev qiv ntawv ua haujlwm uas faib lub cim xeeb dynamically. Nws txhais tau hais tias lub cim xeeb tau faib thaum lub sijhawm ua haujlwm (kev ua tiav ntawm qhov program) los ntawm the heap ntu.
muab faib nyob qhov twg?
Lub Heap yog ib feem ntawm lub computer nco, faib rau ib daim ntawv thov khiav, qhov chaw nco tuaj yeem faib rau cov hloov pauv, chav kawm, thiab lwm yam
Pom zoo:
Dab tsi yog qhov txawv ntawm cov cim thiab cov cim cim?
Symbolism yog hais txog kev siv cov duab tshwj xeeb lossis cov duab zoo nkauj, lossis cov duab kos duab pom tseeb uas tuav cov ntsiab lus sib koom hauv ib pawg. Lub cim yog ib qho duab lossis kos npe uas nkag siab los ntawm ib pawg los sawv cev rau ib yam dab tsi.
Lub luag haujlwm twg hloov pauv lub cim xeeb?
Nyob rau hauv C Programming Language, realloc muaj nuj nqi yog siv los hloov qhov thaiv ntawm lub cim xeeb uas tau muab faib ua ntej. Lub luag haujlwm realloc faib ib lub cim xeeb (uas tuaj yeem ua rau nws loj dua lossis me dua qhov loj dua qhov qub) thiab luam cov ntsiab lus ntawm lub qub block rau lub cim xeeb tshiab, yog tias tsim nyog.
Puas faib lub cim xeeb dawb?
Lub cim xeeb faib siv cov haujlwm malloc thiab calloc tsis yog muab faib rau lawv tus kheej. Li no tus txoj kev pub dawbyog siv, thaum twg qhov kev faib lub cim xeeb tshwm sim. Nws pab txo qhov khib nyiab ntawm kev nco los ntawm kev tso nws.
Rau qhov tsis tuaj yeem faib lub cim xeeb?
Yog koj tau txais qhov yuam kev=12, Tsis tuaj yeem faib lub cim xeeb lossis yuam kev=12, Tsis muaj chaw txaus, qhov no txhais tau tias koj lub cev khiav tawm ntawm lub cim xeeb lossis qhov chaw sib pauv thaum Java sim rab rawg ib txheej txheem.
Qhov tshwj xeeb hauv faib 2 nyob qhov twg?
Txhawm rau qhib Lub Division 2 Tshwj xeeb koj yuav tsum mus txog qib 30 thiab ua tiav Capitol Building Stronghold. Koj tuaj yeem qhib Survivalist, Demolitionist lossis Sharpshooter Lub Division 2 Specialization. Kev Tshwj Xeeb yog dab tsi hauv Division 2?
