string-formatting

I thought this would be simple, but searching Google didn't seem to help. I'm basically trying to write a function which will return a ratio as a string (eg 4:3) when supplies with two integers (eg 800 and 600). string GetRatio(Int A, Int B) { // Code I'm looking for return Ratio; } Konrad Rudolph You can simplify fractions by dividing numerator and denominator by their GCD : var gcd = GCD(A, B); return string.Format("{0}:{1}", A / gcd, B / gcd) And a very basic function for calculating the GCD, using the Euclidean algorithm : static int GCD(int a, int b) { return b == 0 ? Math.Abs(a) : GCD(b,

I see many people using format strings like this: root = "sample" output = "output" path = "{}/{}".format(root, output) Instead of simply concatenating strings like this: path = root + '/' + output Do format strings have better performance or is this just for looks? It's just for the looks. You can see at one glance what the format is. Many of us like readability better than micro-optimization. Let's see what IPython's %timeit says: Python 3.7.2 (default, Jan 3 2019, 02:55:40) IPython 5.8.0 Intel(R) Core(TM) i5-4590T CPU @ 2.00GHz In [1]: %timeit root = "sample"; output = "output"; path = "{}/

Why does C's printf format string have both %c and %s ? I know that %c represents a single character and %s represents a null-terminated string of characters, but wouldn't the string representation alone be enough? Probably to distinguish between null terminated string and a character. If they just had %s , then every single character must also be null terminated. char c = 'a'; In the above case, c must be null terminated. This is my assumption though :) %s prints out chars until it reaches a 0 (or '\0' , same thing). If you just have a char x; , printing it with printf("%s", &x); - you'd have

First of all, I have tried this post (among others): Currency formatting in Python . It has no affect on my variable. My best guess is that it is because I am using Python 3 and that was code for Python 2. (Unless I overlooked something, because I am new to Python). I want to convert a float, such as 1234.5, to a String, such as "$1,234.50". How would I go about doing this? And just in case, here is my code which compiled, but did not affect my variable: money = float(1234.5) locale.setlocale(locale.LC_ALL, '') locale.currency(money, grouping=True) Also unsuccessful: money = float(1234.5)

I am writing a WPF program and I am trying to figure out a way to format data in a TextBox through some repeatable method like a style or template. I have a lot of TextBoxes (95 to be exact) and each one is bound to its own numeric data which can each have their own resolution defined. For example if the data is 99.123 with a resolution of 2 then it should display 99.12. Similarly a data value of 99 and resolution 3 should be displayed as 99.000 (not 99). Is there a way to do this? Edit: I should clarify, there are 95 TextBoxes on the current screen I'm working on, but I want every TextBox

I have a WPF 4 application that contains a TextBlock which has a one-way binding to an integer value (in this case, a temperature in degrees Celsius). The XAML looks like this: <TextBlock x:Name="textBlockTemperature"><Run Text="{Binding CelsiusTemp, Mode=OneWay}"/></TextBlock> This works fine for displaying the actual temperature value but I'd like to format this value so it includes °C instead of just the number (30°C instead of just 30). I've been reading about StringFormat and I've seen several generic examples like this: // format the bound value as a currency <TextBlock Text="{Binding

Silly question, I want to format an integer so that it appears with the 1000's separator (,), but also without decimal places and without a leading 0. My attempts so far have been: String.Format("{0} {1}", 5, 5000); // 5 5000 String.Format("{0:n} {1:n}", 5, 5000); // 5.00 5,000.00 String.Format("{0:0,0} {1:0,0}", 5, 5000); // 05 5,000 The output I'm after is: 5 5,000 Is there something obvious that I'm missing? Richard Friend This worked for me. String.Format("{0:#,0} {1:#,0}", 5, 5000); // 5 5,000 ZafarYousafi Try this:- String.Format("{0:n0}",5000) // 5,000 String.Format("{0:n0}",5) // 5