Video: Puas yog.2f puag ncig?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
2 f ua ' txhais tau tias puag ncig mus rau ob qhov chaw decimal. Hom ntawv ua haujlwm no rov qab cov hlua formatted. Nws ua tsis hloov cov parameter.
Hais txog qhov no, puas yog txoj hlua hom puag ncig?
Kuv pom zoo kom siv txoj hlua . Hom ntawv , lossis tsuas yog ToString ("0.00") thaum koj tsuas xav tau puag ncig rau decimal display purposes, thiab decimal. Hloov yog koj xav tau puag ncig tus lej tiag tiag (piv txwv li siv nws hauv kev suav ntxiv). Nco tseg: Nrog decimal.
Ib yam li ntawd,.2f yog dab tsi hauv Java? 2 f ua , 1.23456); Qhov no yuav format lub floating point tus naj npawb 1.23456 mus txog rau 2 decimal qhov chaw, vim hais tias peb tau siv ob tom qab decimal point hauv formatting qhia %. 2 f ua , f yog rau floating point tooj, uas suav nrog ob qho tib si thiab ntab cov ntaub ntawv hom hauv Java.
Yog li ntawd, yog vim li cas Python round down?
Python puag ncig () Tus lej yog sib npaug rau ndigits precision tom qab tus lej lej. Yog tias ndigit tsis muab lossis tsis yog, ces tus lej ze tshaj plaws raug xa rov qab. Thaum muab tus lej nkag mus rau tus lej, yog tias ob qho tib si puag ncig nce thiab puag ncig cov nqi sib npaug sib npaug ces tus lej rov qab.
Yuav ua li cas koj round decimals hauv Python?
Hloov npe n p kaum tsib qhov chaw los ntawm thawj hloov lub kaum tsib taw tes rau n los ntawm p qhov chaw los ntawm kev muab n los ntawm 10? (10 tsa rau p th hwj chim) kom tau tus lej tshiab m. Tom qab ntawd saib tus lej d hauv thawj kaum tsib qhov chaw m. Yog tias d tsawg dua 5, puag ncig m nqes mus rau tus lej ze tshaj plaws. Txwv tsis pub, puag ncig m up.
Pom zoo:
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