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  1. using System;
  2.  
  3. public class Program
  4. {
  5.     public static void Main()
  6.     {
  7.         int h = 14; // часы
  8.         int m = 30; // минуты  
  9.         int s = 45; // секунды
  10.  
  11.         h = h % 12;
  12.  
  13.         int totalSeconds = h * 3600 + m * 60 + s;
  14.  
  15.         double angle = (totalSeconds * 360.0) / 43200.0;
  16.  
  17.         angle = angle % 360;
  18.  
  19.         Console.WriteLine($"Время: {(h == 0 ? 12 : h)}:{m:00}:{s:00}");
  20.         Console.WriteLine($"Угол часовой стрелки: {angle:F2}°");
  21.  
  22.         Console.WriteLine("\nДополнительные примеры:");
  23.         Console.WriteLine("======================");
  24.  
  25.         TestTime(0, 0, 0);    
  26.         TestTime(3, 0, 0);      
  27.         TestTime(6, 0, 0);    
  28.         TestTime(9, 0, 0);    
  29.         TestTime(12, 0, 0);   
  30.         TestTime(15, 30, 0);  
  31.     }
  32.  
  33.     public static void TestTime(int h, int m, int s)
  34.     {
  35.         int hour12 = h % 12;
  36.         int totalSeconds = hour12 * 3600 + m * 60 + s;
  37.         double angle = (totalSeconds * 360.0) / 43200.0;
  38.         angle = angle % 360;
  39.  
  40.         Console.WriteLine($"{(h == 0 || h == 12 ? 12 : h % 12)}:{m:00}:{s:00} -> {angle:F2}°");
  41.     }
  42. }
  43.  
Success #stdin #stdout 0.08s 31232KB
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stdin
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Standard input is empty
stdout
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Время: 2:30:45
Угол часовой стрелки: 75.38°

Дополнительные примеры:
======================
12:00:00 -> 0.00°
3:00:00 -> 90.00°
6:00:00 -> 180.00°
9:00:00 -> 270.00°
12:00:00 -> 0.00°
3:30:00 -> 105.00°
https://ideone.com/gO3EMg
language:
C# (NET 6.0)
created:
13 hours ago
visibility:
public

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