Video: Dab tsi yog qhov txawv ntawm qhov sib txawv ntawm qhov sib txawv thiab qhov sib txawv ntawm qhov ntab?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov lej thiab ntab yog ob txawv hom ntaub ntawv zauv. Ib tus lej (feem ntau hu ua anint) yog tus lej tsis muaj lej taw tes . A ntab yog ntab - taw tes tus lej, uas txhais tau tias nws yog tus lej uas muaj tus lej lej. Floats siv thaum xav tau ntau dua.
Tom qab ntawd, ib tug kuj yuav nug, dab tsi yog float variable?
ntab yog ib lo lus siv nyob rau hauv ntau yam programminglanguages los txhais a sib txawv nrog tus nqi fractional. Cov lej tsim siv a ntab variable tshaj tawm yuav muaj tus lej ntawm ob sab ntawm tus lej lej. Qhov no yog qhov sib piv rau cov ntaub ntawv tus lej, uas yog tus lej lossis tus lej tag nrho.
Ib tug kuj yuav nug, dab tsi yog floating point tooj thaum lawv nyiam tshaj integers? A tus lej muaj fractional ib feem yog ib floatingpoint tooj . e.g. 3.14 Lawv yog nyiam overintegers thaum peb muaj rau sawv cev tus nqi nruab nrab tus lej nrog ntau precision.
hom ntaub ntawv dab tsi yog ntab?
Cov FLOAT cov ntaub ntawv hom khw muag khoom ob-precision ntab -point tus lej nrog txog 17 tus lej tseem ceeb. FLOAT sib raug rau IEEE 4-byte ntab - taw tes, thiab rau ob hom ntaub ntawv nyob rau hauv C. Qhov ntau ntawm qhov tseem ceeb rau lub FLOAT cov ntaub ntawv hom yog tib yam li qhov ntau ntawm C ob npaug hom ntaub ntawv ntawm koj lub computer.
Dab tsi yog integer ntab thiab hlua?
ib: int tus lej (eg, 3). Yuav ua tau tag nrho cov naj npawb ntawm -2147483648 thiab 2147483647. ntab : Ib feem ( ntab point) tus lej (eg, 3.25907). Yuav ua tau ib tug zauv nruab nrab ntawm kwv yees li 1.5 x 10^45 mus rau 3.4 10^38, nyob rau hauv ntab pointformat. Txoj hlua : Ib ntu ntawm cov cim (piv txwv li, "Hello User6555")
Pom zoo:
Dab tsi yog qhov zoo sib xws thiab qhov sib txawv ntawm qhov nrawm thiab nrawm?
Kev sib piv daim duab piv rau Kev Sib Piv Ceev Ceev Tus Nqi Hloov ntawm qhov kev ncua deb Hloov pauv hloov thaum lub cev rov qab mus rau nws qhov chaw pib Yuav tsis xoom Yuav yog xoom Tsiv khoom Ceev ntawm cov khoom txav tsis tuaj yeem tsis zoo. Kev nrawm ntawm cov khoom txav tuaj yeem yog qhov zoo, tsis zoo lossis xoom
Dab tsi yog qhov zoo sib xws thiab qhov sib txawv ntawm kinetic thiab lub zog muaj peev xwm?
Lub Zog Muaj Peev Xwm yog lub zog khaws cia hauv ib qho khoom lossis qhov system vim nws txoj haujlwm lossis kev teeb tsa. Kinetic zog ntawm ib yam khoom yog txheeb ze rau lwm yam khoom txav thiab nyob ruaj ruaj hauv nws qhov chaw tam sim ntawd
Dab tsi yog qhov txawv ntawm qhov loj me thiab theem nrab ntawm kev sib txawv?
Lub hom phiaj tseem ceeb ntawm kev sib txawv yog cov uas tsis tuaj yeem hloov lossis hloov pauv. Piv txwv li, xim, haiv neeg, haiv neeg thiab kev sib deev orientation. Cov yam no hloov tsis tau. Ntawm qhov tod tes, qhov thib ob qhov ntev yog piav raws li cov uas tuaj yeem hloov kho
Dab tsi yog qhov sib txawv ntawm qhov sib txawv ntawm cov kab sib txuas thiab ntau qhov sib piv?
6. (2 lub cim) Qhov sib txawv ntawm cov kab sib txuas (kev sib piv) thiab ntau qhov sib piv yog dab tsi? Cov kab sib xyaw ua ke yog npaj sib piv; uas yog, tshwj xeeb txhais tau tias yog ua ke nyob rau hauv ntau txoj kev thiab contrasted nrog rau lwm yam kev sib txuas ntawm txhais tau tias
Dab tsi yog qhov sib txawv ntawm cov kab lus sib npaug thiab qhov sib npaug sib npaug?
Cov kab lus sib npaug muaj qhov muaj txiaj ntsig zoo ib yam tab sis tau nthuav tawm nyob rau hauv ib hom ntawv sib txawv uas siv cov khoom ntawm cov lej xws li ax + bx = (a + b) x yog cov kab lus sib npaug. nruj me ntsis, lawv tsis yog 'sib npaug', yog li peb yuav tsum siv 3 kab sib luag hauv 'sib npaug' es tsis yog 2 raws li qhia ntawm no