Cov txheej txheem:

Dab tsi yog qhov sib txawv ntawm qhov sib txawv hauv ICT?
Dab tsi yog qhov sib txawv ntawm qhov sib txawv hauv ICT?

Video: Dab tsi yog qhov sib txawv ntawm qhov sib txawv hauv ICT?

Video: Dab tsi yog qhov sib txawv ntawm qhov sib txawv hauv ICT?
Video: YWJ KOJ SIAB Official music video by: Dang Thao 2024, Kaum ib hlis
Anonim

Tshaj tawm VariablesEdit

Lub npe Kev piav qhia Loj
char Tus cwj pwm thiab / lossis tus lej me. 1byte
int Tus lej 4 bytes
bool ua Boolean tus nqi, tuaj yeem nqa ob tus nqi "True" lossis "False 1bit ib
ntab Floating point tooj 4 bytes

Ntawm no, dab tsi yog qhov sib txawv thiab nws hom?

Tej yam uas hloov pauv hauv kev sim hu ua sib txawv . A sib txawv yog ib yam dab tsi, zoo, los yog tej yam kev mob uas muaj nyob rau hauv txawv tus nqi los yog hom . Ib qho kev sim feem ntau muaj peb hom ntawm sib txawv : ywj siab, nyob ruaj khov, thiab tswj tau.

Dab tsi yog hom sib txawv ntawm qhov sib txawv hauv computer programming? Hloov pauv tuaj nyob rau hauv tag nrho cov duab thiab ntau thiab tsawg. Qee qhov yog siv los khaws cov lej, qee qhov yog siv los khaws cov ntawv thiab qee qhov siv rau ntau qhov nyuaj hom ntawm cov ntaub ntawv.

Hom ntaub ntawv kom paub yog:

  • Txoj hlua (los yog str lossis ntawv nyeem).
  • Cim (los yog char).
  • Integer (los yog int).
  • Float (los yog tiag).
  • Boolean (los yog bool).

Ntawm no, dab tsi yog qhov hloov pauv hauv ICT?

Hloov pauv . A sib txawv yog ib daim ntaub ntawv uas koj tuaj yeem hloov kho uas kuj tau muab lub npe. Muaj ntau daim ntawv thov software xws li spreadsheets thiab databases siv sib txawv . Txhua lub computer programming lus tuaj yeem ua haujlwm sib txawv . Piv txwv li.

Dab tsi yog qhov sib txawv ntawm qhov sib txawv hauv kev tshawb fawb?

Muaj rau 6 hom kev sib txawv:

  • DEPENDENT VARIABLES.
  • INDEPENDENT VARIABLES.
  • INTERVENING VARIABLES.
  • MODERATOR VARIABLES.
  • CONTROL VARIABLES.
  • EXTRANEOUS VARIABLES.

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