number-formatting

问题 I am trying to convert numbers into comma separated format with two decimal places for each and every number in javascript: My code: Number(parseFloat(n).toFixed(2)).toLocaleString('en'); This code doesn't show two decimal places (.00) for whole numbers. I am expecting following results for a set of numbers: 10000 => 100,00.00 123233.12 => 123,233.12 300000.5 => 300,000.50 Appreciate your answer, thanks. 回答1: You can use the minimumFractionDigits option of the toLocaleString function. //

问题 I like using MATLAB's shortEng notation in the interactive Command Window: >> a = 123e-12; >> disp(a); 1.2300e-10 % Scientific notation. Urgh! >> format shortEng; >> disp(a); 123.0000e-012 % Engineering notation! :-D But I want to use fprintf: >> format shortEng; >> fprintf('%0.3e', a); 1.2300e-10 % Scientific. Urgh! How do I print values with fprintf or sprintf with Engineering formatting using the MATLAB Format Operators? I know I could write my own function to format the values into

问题 I have a requirement to show a number value like 123456789.905 in the following format 123,456,789.90 . But the comma separation changes depending on the locale selected in the phone (as if with US English selected comma separation is 3 places and if India English is selected it is like 12,34,56,789.90 ). How can I format my Double ? 回答1: So, java.text.NumberFormat doesn't slove the problem, unfortunately, but com.ibm.icu.text.NumberFormat does. You can use this: Double d = 123456789.905; com

问题 Oracle 11.2.0.3.0, APEX 4.1.1.00.23. We need to display numbers in our application with the format FM999999999990.000 and dates with the English format DD-MON-YYYY . Even if the application language is going to change (french, spain, etc.), we always need this format for numbers (no space or comma for group separator, and a point for decimal separator, ie. -1254.010 ) and date (3 first letters from the English month name ie. 12-FEB-2012 ). Here are globalization attributes we are using (

问题 I want to use number_format function in PHP. For example: $number = 234.51; echo number_format($number,2); This works for float numbers but I want to use it for different numbers. If a number is decimal and doesn't have any floating points, it shows like : 145.00 . How can I fix this? I mean I want to show as many floating points as needed, not more. 回答1: Investigate the printf and sprintf functions instead of number_format . They give the ability to format numbers as you wish. printf("%d",

问题 I want to use number_format function in PHP. For example: $number = 234.51; echo number_format($number,2); This works for float numbers but I want to use it for different numbers. If a number is decimal and doesn't have any floating points, it shows like : 145.00 . How can I fix this? I mean I want to show as many floating points as needed, not more. 回答1: Investigate the printf and sprintf functions instead of number_format . They give the ability to format numbers as you wish. printf("%d",

问题 The Back Story I have some decimal values which I am displaying as strings on a web page as part of a larger string. I started off using a Standard Numeric Format String to output this. E.g. myDecimal.ToString("P0") The 0 after the P tells it I want no decimal places. This works as far as it goes, in that my ouput ends up looking something like: Calculated as above based on the phased minimum Company contribution rate of 2 % The Space Problem I really want to get rid of that space between the

问题 In one part of our application there is the requirement to format numbers according to the user's locale. The interface essentially looks like this: std::string format_number(double number); The old implementation looked like this: std::string format_number(double number) { using namespace std; static const locale user_loc(""); ostringstream fmtstream; fmtstream.imbue(user_loc); fmtstream << std::fixed; fmtstream << number; return fmtstream.str(); } We have now noticed that with our compiler

问题 I have a number like 202667.4 . I want to convert this to number based on culture . For Ex: In "de"(German) the number should be in 202.667,40 . Any help will be greatly appreciated. Thanks. 回答1: If you want to represent existing number (say, double ) in culture specific format, try formatting : https://docs.microsoft.com/en-us/dotnet/standard/base-types/standard-numeric-format-strings double source = 202667.4; // "n" - ... group separators, and a decimal separator with optional negative sign

问题 Typically, Rounding to 2 decimal places is very easy with printf("%.2lf",<variable>); However, the rounding system will usually rounds to the nearest even . For example, 2.554 -> 2.55 2.555 -> 2.56 2.565 -> 2.56 2.566 -> 2.57 And what I want to achieve is that 2.555 -> 2.56 2.565 -> 2.57 In fact, rounding half-up is doable in C, but for Integer only; int a = (int)(b+0.5) So, I'm asking for how to do the same thing as above with 2 decimal places on positive values instead of Integer to achieve