revise C++ example

Author: rsokl

Python/Module1_GettingStartedWithPython/GettingStartedWithPython.ipynb

@@ -116,19 +116,21 @@
    "source": [
     "## Why Python?\n",
     "\n",
-    "Python has become a hugely popular programming language. In fact, it is likely the [most popular introductory language at universities](https://cacm.acm.org/blogs/blog-cacm/176450-python-is-now-the-most-popular-introductory-teaching-language-at-top-u-s-universities/fulltext). First and foremost, its syntax is designed to be intuitive and readable. For example, the following Python code:\n",
+    "Python has become a hugely popular programming language. In fact, it is likely the [most popular introductory language at universities](https://cacm.acm.org/blogs/blog-cacm/176450-python-is-now-the-most-popular-introductory-teaching-language-at-top-u-s-universities/fulltext). First and foremost, its syntax is designed to be intuitive and readable. For example, the following Python code sums the numbers 0-9, and prints the result:\n",
     "```python\n",
-    "print(\"Hello world\")\n",
+    "a = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]\n",
+    "print(sum(a))\n",
     "```\n",
     "\n",
-    "produces the same result as the less-obvious and lengthier C++ code:\n",
+    "This can be reproduced by the following C++ code, which is arguably less-intuitive:\n",
     "```cpp\n",
     "#include <iostream>\n",
+    "#include <vector>\n",
+    "#include <numeric>\n",
     "\n",
-    "int main()\n",
-    "{\n",
-    "    std::cout << \"Hello world\" << std::endl;\n",
-    "    return 0;\n",
+    "int main() {\n",
+    "    std::vector<int> a = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};\n",
+    "    std::cout << std::accumulate(a.begin(), e.end(), 0) << std::endl;\n",
     "}\n",
     "```\n",
     "\n",