I'm having a problem with my Visual Studio with C#. I'm creating console applications using .NET 5.0 (current).
Whenever I compile my program and put in decimal numbers (example: 62.5 it saves it as 625). How do I fix this?
Here's the code I've been using (it also does not save the commas on every other program). This program chooses the biggest number of the 3 inputs
using System;
namespace OEFGREATEST
{
class Program
{
static void Main(string[] args)
{
string input_1_b;
string input_2_b;
string input_3_b;
decimal input_1;
decimal input_2;
decimal input_3;
input_1_b = Console.ReadLine();
input_2_b = Console.ReadLine();
input_3_b = Console.ReadLine();
input_1 = Convert.ToDecimal(input_1_b);
input_2 = Convert.ToDecimal(input_2_b);
input_3 = Convert.ToDecimal(input_3_b);
decimal output_1 = Math.Max(input_1, input_2);
decimal output_2 = Math.Max(output_1, input_3);
Console.WriteLine(output_2);
}
}
}
I've been using an online compiler while using the exact same program and it saves decimal numbers as normal (ex. 62.5 saves as 62.5)
Here are pictures of the compilers:
The online compiler (works fine)
Compiler Visual Studio (does not work fine)
Does anyone know how I can fix this? I've already reinstalled Visual Studio but it didn't fix it.
CodePudding user response:
The problem is that your PC has a language/culture (locale) setting that uses the dot (.
) as a digit separator rather than as a decimal point (and, presumably, a comma for the decimal point). That is, 1 million would be written as 1.000.000
and (an approximation to) π would be 3,14159
. In such a culture, the input dots are, effectively, ignored, so 62.3
is read as 623
.
I'm not sure exactly what you mean by "can't use commas" (otherwise, entering 62,3
and 15,1
for the non-integral input values should work); however, you can fix the issue in two ways:
Change the language/region settings of your computer; if you're on Windows 10, it's from "Control Panel" -> "Clock and Region" – and select a language that uses the 'expected' decimal point (like English).
You can change the locale programmatically. Create a culture that uses the
dot
for the decimal point (like "en-US") and pass that as a second argument to theToDecimal
calls. Here's a modified version of your code that does that:
using System;
using System.Globalization; // For the CultureInfo class
namespace OEFGREATEST
{
class Program
{
static void Main(string[] args)
{
string input_1_b;
string input_2_b;
string input_3_b;
decimal input_1;
decimal input_2;
decimal input_3;
input_1_b = Console.ReadLine();
input_2_b = Console.ReadLine();
input_3_b = Console.ReadLine();
// Create an English/US culture and pass that to the ToDecimal calls ...
CultureInfo CI = new CultureInfo("en-US", false);
input_1 = Convert.ToDecimal(input_1_b, CI);
input_2 = Convert.ToDecimal(input_2_b, CI);
input_3 = Convert.ToDecimal(input_3_b, CI);
decimal output_1 = Math.Max(input_1, input_2);
decimal output_2 = Math.Max(output_1, input_3);
Console.WriteLine(output_2);
}
}
}
Note that the above, as it stands, won't change the locale used for any output value; thus, if your largest input is 456.7
, it will be displayed as 456,7
(using the system default locale). You can change this by adding a line like the following, before performing any output (using the same CultureInfo
object, CI
):
Thread.CurrentThread.CurrentCulture = CI; // Use this line to change the UI locale
(To use the above code, you will also need to add a using System.Threading;
line near the top of your source file.)