diff --git a/WebApplicationLesson1/Controllers/CalcController.cs b/WebApplicationLesson1/Controllers/CalcController.cs
new file mode 100644
index 0000000..16c03a3
--- /dev/null
+++ b/WebApplicationLesson1/Controllers/CalcController.cs
@@ -0,0 +1,22 @@
+using Microsoft.AspNetCore.Mvc;
+
+namespace WebApplicationLesson1.Controllers
+{
+    public class CalcController : Controller
+    {
+        public string Index(double a, double b, string c)
+        {
+            switch (c)
+            {
+                case null:
+                case "+": return $"{a} + {b} = {a + b}";
+                case "-": return $"{a} - {b} = {a - b}";
+                case "*": return $"{a} * {b} = {a * b}";
+                case "/": return b != 0 ? $"{a} / {b} = {a / b}" : "На ноль делить нельзя";
+                default:
+                    return "Только операции +,-,*";
+            }
+
+        }
+    }
+}
diff --git a/WebApplicationLesson1/Startup.cs b/WebApplicationLesson1/Startup.cs
index d9a1eb0..dd25eed 100644
--- a/WebApplicationLesson1/Startup.cs
+++ b/WebApplicationLesson1/Startup.cs
@@ -46,7 +46,7 @@ public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
             {
                 endpoints.MapControllerRoute(
                     name: "default",
-                    pattern: "{controller=Home}/{action=Index}/{id?}");
+                    pattern: "{controller=Home}/{action=Index}/{a?}/{b?}/{c?}");
             });
         }
     }