Add std::cin cells to example notebooks

Author: mcbarton

notebooks/xeus-cpp-lite-demo.ipynb

@@ -95,6 +95,27 @@
     "std::cerr << \"some error\" << std::endl;"
    ]
   },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "e9140f55-e7c1-4122-992a-47e4f9f21bc2",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "std::string name;\n",
+    "std::cin >> name;"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "34189c4a-2941-4ac5-9992-d984aea57cda",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "std::cout << \"Your name is\" << name;"
+   ]
+  },
   {
    "cell_type": "code",
    "execution_count": 3,