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labs/lab3_done/Calc_switch/Program.cs

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+using System;
+
+public class Program
+{
+    static void Main(string[] args)
+    {
+        Console.Write("A = ");
+        double a = double.Parse(Console.ReadLine());
+        Console.Write("OP = ");
+        char op = char.Parse(Console.ReadLine());
+        Console.Write("B = ");
+        double b = double.Parse(Console.ReadLine());
+
+
+        bool ok = true;
+        double res = 0;
+
+        switch (op) 
+        {
+            case '+': res = a + b; break;
+            case '-': res = a - b; break;
+            case '*': res = a * b; break;
+            case '/':
+            case ':':
+                      res = a / b; break;
+            default: ok = false; break;
+        }
+
+        if (ok)
+        {
+            Console.WriteLine("{0} {1} {2} = {3}", a, op, b, res);
+        }
+        else
+        {
+            Console.WriteLine("Операция не определена");
+        }
+
+
+    }
+}