Dab tsi yog kev siv dynamic memory allocation?
Dab tsi yog kev siv dynamic memory allocation?

Video: Dab tsi yog kev siv dynamic memory allocation?

Video: Dab tsi yog kev siv dynamic memory allocation?
Video: Python! Flattening Nested Lists 2024, Kaum ib hlis
Anonim

Dynamic Memory Allocation . Dynamic memory allocation yog thaum ib tug executing program thov kom lub operating system muab nws ib tug thaiv ntawm lub ntsiab nco . Qhov program ntawd siv qhov no nco rau ib txhia lub hom phiaj . Feem ntau cov lub hom phiaj yog ntxiv cov node rau cov ntaub ntawv qauv.

Tsis tas li ntawd, dynamic memory allocation yog dab tsi?

Dynamic Memory Allocation . Dynamic memory allocation hais txog kev tswj hwm qhov system nco ntawm runtime. Dynamic nco kev tswj hwm hauv C programming lus yog ua los ntawm pawg plaub lub luag haujlwm hu ua malloc(), calloc(), realloc(), thiab free().

Ib sab saum toj no, dab tsi yog qhov kev faib ua lub cim xeeb thiab nws hom? Muaj ob hom ntawm kev faib kev nco . 1) Static kev faib kev nco -- faib los ntawm tus compiler. Qhov loj me thiab hom ntawm nco yuav tsum paub thaum lub sij hawm sau. 2) Dynamic memory allocation -- nco faib thaum lub sijhawm khiav.

Ib sab ntawm qhov no, vim li cas peb thiaj li xav tau dynamic nco faib hauv C?

Peb tuaj yeem ua rau peb qhov kev pabcuam hloov tau yooj yim yog tias, thaum ua tiav, nws tuaj yeem faib ntxiv nco thaum xav tau thiab dawb nco thaum tsis yog xav tau . Kev faib tawm ntawm nco thaum ua tiav yog hu ua dynamic memory faib . C muab cov ntaub ntawv ua haujlwm rau faib thiab dawb nco dynamically thaum lub sijhawm ua haujlwm ntawm qhov program.

dynamically faib txhais li cas?

Dynamic nco faib hauv C/C++ hais txog kev ua lub cim xeeb faib manually los ntawm programmer. Dynamically faib nco yog faib ntawm Heap thiab non-static thiab cov hloov pauv hauv zos tau txais kev nco faib ntawm Stack (Saib Memory Layout C Programs kom paub meej).

Pom zoo: