[C++] Challenge 1 (ReadyForMerge) (#454)

* [C++] Challenge 1

* Add newline output

Author: Alex Botello

challenge_1/cpp/alexbotello/README.md

@@ -0,0 +1,5 @@
+# Reverse String
+###### Language Version (C++ 11)
+
+We use a For loop to iterate through the string starting at the last element.
+At each element print the output.

challenge_1/cpp/alexbotello/src/main.cpp

@@ -0,0 +1,19 @@
+#include <iostream>
+#include <string>
+using namespace std;
+
+int main()
+{
+  string input;
+
+  cout << ">: ";
+  getline(cin, input);
+
+  for (int i = input.length(); i >= 0; i--)
+  {
+    cout << input[i];
+  }
+  cout << endl;
+
+  return 0;
+}