Intuit // C# // Lecture_4 // Laba_#2 _ZAD#2, C#

Intuit // C# // Lecture_4 // Laba_#2 _ZAD#2

//Rextester.Program.Main is the entry point for your code. Don't change it.
//Compiler version 4.0.30319.17929 for Microsoft (R) .NET Framework 4.5

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;
using System.IO;

namespace Rextester
{
    public class Program
    {
//Functions
        public static double Left(double R, double x, ref double y)
        {  y = R - Math.Sqrt(-(x*x) - 2*x*R);
            return y;
        }
        
        public static double Right(double R, double x, ref double y)
        {   y = -R + Math.Sqrt(-(x*x) + 2*x*R);
            return y;
        }
 
        public static void Main(string[] args)
        {
//Your code goes here
//arguments
            
            /*выстрел снайпера должен попасть в цель (заштрихованная область)
                                    Y/b
                                 ^
                                 |      
                    *|*          |
               *     |     *     |
             *       |       *   |
                     |           |
                     |           |
           *         |    R     *|     R
           *---------+----------*+-----------+
           *         |\         *|===========|
                     | \        =|===========|
                    R|  \      ==|===========|R
              *      |   \   *===|===========|
                *    |    \*=====|===========|
                    *|*==========|===========|
         ------------+-----------+-----------+--------------> X/a
                     |===========|========= *|*            
                     |===========|=====*\    |     *      
                     |===========|===*   \   |       *    
                    R|===========|==      \  |R           
                     |===========|=        \ |            
                     |===========|*         \|          * 
                     +-----------+*----------+----------* 
                          R      |*     R    |          * 
                                 |           |            
                                 |           |            
                                 |   *       |        *    
                                 |     *     |      *      
                                 |          *|*            
                                 |  
           */ 
            Console.WriteLine("LABA2_ZAD2");
            
            double x=0,y=0, R=1;
            double a=0, b = 0; //выстрел снайпера (x:y)
            char L_R;
            
//execution
            Console.WriteLine("enter radius R");
            R = Convert.ToDouble(Console.ReadLine()); 
            Console.WriteLine("enter shoot coordinates a(x)");
            a = Convert.ToDouble(Console.ReadLine());
            Console.WriteLine("enter shoot coordinates b(y)");
            b = Convert.ToDouble(Console.ReadLine());
            x=R; y=R;
            Console.WriteLine("R={0,3}; a={1,3}; b={2,3}", R,a,b);
            Console.WriteLine("R={0,3}; x={1,3}; y={2,3}", R,x,y);
            
            Console.WriteLine("-------------");
            if (a<0 && b>-R && b<Left(R,a,ref y))  {Left(R,a,ref y);  Console.WriteLine("Выстрел попал слева в цель: L_x= {0,1}, L_y= {1,1}",a,y);}//{L_R = 'L';}  else {L_R='R';}
            else if (a>0 && b<R  && b>Right(R,a,ref y)) {Right(R,a,ref b); Console.WriteLine("Выстрел попал справа в цель: R_x= {0,1}, R_y= {1,1}",a,y);}
            else {Console.WriteLine("MIMO");}
        }
    }
}


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