round to 3 decimal places calculator

one class file is another Id, to use the decimal point and control the digits of the decimal point, I use the following method: 1. When an attempt is created, round (avg (EXPSCORE) * 1000)/1000 as avg is used to control the number of decimal places; 2. Modify the attributes in the generated ***. hbm. xml file, for exa

1, Math.Round (0.333333,2);//According to the international standard of rounding2.Double dbdata=0.335333;String Str1=string.format ("{0:f}", dbdata);//default is two-bit reservedThere is a similar approach, but it does not advocate:Double D1 = 0.335333;String d2 = D1.ToString ("0.00"); //String d3 = D1. ToString ("F2");D2= "0.33"3.float i=0.333333;int j= (int) (i * 100);i = j/100;4.Decimal. Round (

in Java, when two integers are divided, because the number after the decimal point is truncated, the result of the operation will be an integer, and if you want to get the result of the operation as a floating point, you must cast both integers one or both to the floating-point numbers. For example: (float) A/b///convert one of the integers to a floating-point number and divide it with another integer A /(float) b (float) A/(float) b//convert two

Determines whether a floating-point type+ (BOOL) Ispurefloat: (nsstring*) string {nsscanner* scan = [Nsscanner scannerwithstring:string];float Val;return [scan scanfloat:val] [scan isatend];}Limit the number of input bits in textfiledif ([string isequaltostring:@ "]) {return YES;}NSString *text = [Textfield.text stringbyreplacingcharactersinrange:range withstring:string];if ([Mytool Ispurefloat:text]) {if ([text Doublevalue] Two digits after the decimal