decimal

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 2 years ago . I want to write a program in C++ to cin a Decimal number and cout the digits after Decimal for example 0.26547 -> 5. I wrote this but not work correctly: int main() { int i=0,b; float a ; cin>>a ; while(a!=0) { a*=10 ; b=a ; a-=b ; i+=1 ; } cout<<i ; } For example for 0.258 instead of 3, returns 20. can one

问题 I am trying to get data from a form, the form is reproduced a number of times based on a list. One form for each item. The form consists of a checkbox and a textfield. If the checkbox is checked then I need the accompanying textfield data as well. view: for item in request.POST.getlist('item_list'): item_id = int(item) item = Item.objects.get(id=item_id) item_name = item.name print item_name list = List(name = item_name, created_on = now, edited_on = now) for price in request.POST.getlist(

问题 This question already has answers here : Leave only two decimal places after the dot (13 answers) Closed 5 years ago . I have a process, in which client want me to always display amount with two decimals either have value with decimal or not example: if 17 then i want to display "17.00" and if 17.2 then i want to display "17.20" or if 17.2033 then i want to display "17.20" i have tried String.Format("{0:.##}", rec.Rate) it does not works, please help me how can i do it.. thanks in advance 回答1

问题 This is so many times repeated at SO, but I would want to state my question explicitly. How is a decimal which would look like 2.0100 "rightly" presented to the user as another "decimal" 2.01? I see a lot of questions on SO where the input is a string "2.0100" and need a decimal 2.01 out of it and questions where they need decimal 2.0100 to be represented as string "2.01". All this can be achieved by basic string.Trim, decimal.Parse etc. And these are some of the approaches followed: decimal

问题 This is the code below for converting numbers to words. What is the exactly problem ? Everything is great in English but in my country (Romania) there is different spelling let's make that clear in a few examples : Ex. 1 - English, One dollar,One thousand, One hundred, Two hundred that's how you write Romanian, Un dollar, O mie, O suta, Doua Sute, Trei Sute, there is a plural changing on the words, In English you use One for everything almost in Romanian this changes and I don't know how to

问题 DecimalFormat df2 = new DecimalFormat("#.##"); double zipf = 0.23951367781155017; String zipt = df2.format(zipf); System.out.println(zipt); And I get "0,24" The problem with this is then I want to use it as a double. But the Double.valueOf(); method fails due to the comma being there in the string output. Any way to solve this? 回答1: For decimal dot, you should create an instance with english locale like this: NumberFormat nf = NumberFormat.getNumberInstance(Locale.ENGLISH); nf

问题 I'm working on a harmonic ratio program and part of what I want a user to be able to do is plug in various ratios and have the decimal-valued frequency that's playing show you more ratio-locked frequencies that are higher or lower. Anyway, on this webpage there is a javascript algorithm to show fractional values (ratios) from given decimals. http://www.mindspring.com/~alanh/fracs.html How does it work? I am interested in implementing it myself, but I don't really understand how it functions.

问题 I want to globally set the ouptut precision to 2 decimal places. I already tried to use iomanip and setprecision , however I keep getting output with 'e' in it. This is my example code: #include <iostream> #include <iomanip> using namespace std; int main () { double pay=16.78; double hours; double total; cout.precision(2); cout << "Please enter how many hours you worked : " << endl; cin >> hours; total=hours*pay; cout << "You earned: " << total << endl; } 回答1: I'm not familiar with "cout

问题 I have found many questions on this issue, however, I have not been able to get my code to run. My program should take a hex value, check to see if it is a valid hex character, then display the hex value as a decimal value. If it is a lower case hex character then it needs to be converted to upper case. All this needs to be in a loop. I have all of this done except for converting the hex to decimal. I have the code in the program I think should convert it, but it will not compile. I will list

问题 I'm looking the best way to transform a float number to its decimal representation in C. I'll try to give you an example: the user introduces a number in IEEE754 (1 1111111 10101...) and the program has to return the decimal representation (ex. 25.6) I've tried with masks, and bitwise operations, but I haven't got any logical result. 回答1: I believe the following is performing the operation you describe: I use the int as an intermediate representation because it has the same number of bits as