Correct formatting of numbers in output

00_Common/dotnet/Games.Common/IO/IReadWrite.cs

@@ -1,5 +1,4 @@
-using System;
+using Games.Common.Numbers;
-using System.IO;
 
 namespace Games.Common.IO;
 
@@ -76,17 +75,16 @@ public interface IReadWrite
     void WriteLine(string message = "");
 
     /// <summary>
-    /// Writes a <see cref="float" /> to output, formatted per the BASIC interpreter, with leading and trailing spaces.
+    /// Writes a <see cref="Number" /> to output.
     /// </summary>
-    /// <param name="value">The <see cref="float" /> to be written.</param>
+    /// <param name="value">The <see cref="Number" /> to be written.</param>
-    void Write(float value);
+    void Write(Number value);
 
     /// <summary>
-    /// Writes a <see cref="float" /> to output, formatted per the BASIC interpreter, with leading and trailing spaces,
+    /// Writes a <see cref="Number" /> to output.
-    /// followed by a new-line.
     /// </summary>
-    /// <param name="value">The <see cref="float" /> to be written.</param>
+    /// <param name="value">The <see cref="Number" /> to be written.</param>
-    void WriteLine(float value);
+    void WriteLine(Number value);
 
     /// <summary>
     /// Writes an <see cref="object" /> to output.

00_Common/dotnet/Games.Common/IO/TextIO.cs

@@ -1,7 +1,4 @@
-using System;
+using Games.Common.Numbers;
-using System.Collections.Generic;
-using System.IO;
-using System.Linq;
 
 namespace Games.Common.IO;
 
@@ -100,9 +97,9 @@ public class TextIO : IReadWrite
 
     public void WriteLine(string value = "") => _output.WriteLine(value);
 
-    public void Write(float value) => _output.Write(GetString(value));
+    public void Write(Number value) => _output.Write(value.ToString());
 
-    public void WriteLine(float value) => _output.WriteLine(GetString(value));
+    public void WriteLine(Number value) => _output.WriteLine(value.ToString());
 
     public void Write(object value) => _output.Write(value.ToString());
 

00_Common/dotnet/Games.Common/Numbers/Number.cs

@@ -0,0 +1,20 @@
+namespace Games.Common.Numbers;
+
+/// <summary>
+/// A single-precision floating-point number with string formatting equivalent to the BASIC interpreter.
+/// </summary>
+public struct Number
+{
+    private readonly float _value;
+
+    public Number (float value)
+    {
+        _value = value;
+    }
+
+    public static implicit operator float(Number value) => value._value;
+
+    public static implicit operator Number(float value) => new Number(value);
+
+    public override string ToString() => _value < 0 ? $"{_value} " : $" {_value} ";
+}

25_Chief/csharp/Game.cs

@@ -1,4 +1,3 @@
-using Chief.Resources;
 using static Chief.Resources.Resource;
 
 namespace Chief;

25_Chief/csharp/IReadWriteExtensions.cs

@@ -2,7 +2,7 @@ namespace Chief;
 
 internal static class IReadWriteExtensions
 {
-    internal static bool ReadYes(this IReadWrite io, string format, float value) =>
+    internal static bool ReadYes(this IReadWrite io, string format, Number value) =>
         io.ReadYes(string.Format(format, value));
     internal static bool ReadYes(this IReadWrite io, string prompt) =>
         io.ReadString(prompt).Equals("Yes", StringComparison.InvariantCultureIgnoreCase);

25_Chief/csharp/Math.cs

@@ -6,7 +6,7 @@ public static class Math
 {
     public static float CalculateOriginal(float result) => (result + 1 - 5) * 5 / 8 * 5 - 3;
 
-    public static string ShowWorking(float value) =>
+    public static string ShowWorking(Number value) =>
         string.Format(
             Formats.Working,
             value,

25_Chief/csharp/Resources/Bye.txt

@@ -0,0 +1 @@
+Bye!!!