WebFeb 12, 2015 · When you need to do this with something that's already "in" your program as a string, you can use an std::stringstream to do the conversion: std::string input = "1,234,567.89"; std::istringstream buffer (input); buffer.imbue (std::locale ("")); double d; buffer >> d; Share Improve this answer Follow edited Feb 12, 2015 at 15:28 WebMay 3, 2024 · You can do it recursively as follows (beware INT_MIN if you're using two's complement, you'll need extra code to manage that): void printfcomma2 (int n) { if (n < 1000) { printf ("%d", n); return; } printfcomma2 (n/1000); printf (",%03d", n%1000); } void printfcomma (int n) { if (n < 0) { printf ("-"); n = -n; } printfcomma2 (n); }
c# - Difference between ToString("N2") and ToString("0.00")
WebMar 15, 2024 · Notice that the input string does not contain the Hexadecimal prefix. Use multiple flags. You can compose multiple Flagged Enums to create a new value that represents the union of the specified values. We can use this capability to parse, for example, a currency that contains the thousands separator: WebAug 11, 2015 · You can implement a ICustomFormatter that divides the value by thousand, million or billion, and use it like this: var result = string.Format (new MyCustomFormatter (), " {0:MyFormat}", number); Share Improve this answer Follow answered Jul 31, 2012 at 1:49 dtb 211k 36 399 429 dxi firmware
Different ways to convert String to Integer in C# - GeeksforGeeks
WebJul 18, 2007 · 今天在做项目时，碰到一个很奇怪的问题，我使用string.Format居然报“输入的字符串格式有误”的错误，我调了很久，还是不对，不明白错 在哪里，后来还是google了一下，原来我在字符串中出现了"{"字符。 Web3 Answers Sorted by: 9 You can use: decimal.Parse (amount).ToString ("N") This assumes your culture uses the format you want. You can specify a culture explicitly, for example: decimal.Parse (amount, CultureInfo.InvariantCulture) .ToString ("N", new CultureInfo ("de-DE")) for the culture "German (Germany)" ( "de-DE" ). WebMar 8, 2010 · int value; var ok = "123".TryParse (out value, NumberFormatInfo.CurrentInfo) It works fine until I want to use a group separator: As I live in France, where the thousand separator is a space and the decimal separator is a comma, the string "1 234 567,89" should be equals to 1234567.89 (in Invariant culture). But, the function crashes! dxi houston