Merge pull request MicrosoftDocs#124 from LegalizeAdulthood/patch-1

Format functor class example

Author: Colin Robertson

docs/standard-library/function-objects-in-the-stl.md

@@ -23,15 +23,17 @@ A *function object*, or *functor*, is any type that implements operator(). This
 ## Creating a Function Object 
  To create a function object, create a type and implement operator(), such as: 
 
+```
 class Functor 
- { 
- public: 
- int operator()(int a, int b) 
- { 
- return a <b; 
- } 
- }; 
- 
+{ 
+public: 
+ int operator()(int a, int b) 
+ { 
+ return a < b; 
+ } 
+}; 
+```
+
  The last line of the `main` function shows how you call the function object. This call looks like a call to a function, but it is actually calling operator() of the Functor type. This similarity between calling a function object and a function is how the term function object came about. 
 
 ## Function Objects and Containers