Update 2.cpp.md

content/4.languages/2.cpp.md

@@ -86,18 +86,16 @@ To get started using Necto with C++ and Conan:
 
     #conanfile.py
     ```python
-    from conan import ConanFile
-    from conan.tools.cmake import cmake_layout
-
-    class ExampleRecipe(ConanFile):
-        settings = "os", "compiler", "build_type", "arch"
-        generators = "CMakeDeps", "CMakeToolchain"
-        
-        def requirements(self):
-            self.requires("poco/1.13.3")
-        
-        def layout(self):
-            cmake_layout(self)
+def fib(n):    # write Fibonacci series up to n
+    """Print a Fibonacci series up to n."""
+    a, b = 0, 1
+    while a < n:
+        print(a, end=' ')
+        a, b = b, a+b
+    print()
+
+# Now call the function we just defined:
+fib(2000)
     ```
 
     :::