fix(guide): Fix directory structure

guide/english/cplusplus/error-handling/index.md

@@ -0,0 +1,42 @@
+---
+title: Error Handling
+---
+# C++ Exception Handling
+An exception is a problem that arises during the execution of a program.Exceptions provide a way to transfer control from one part of a program to another. C++ exception handling is built upon three keywords: #try, #catch, and #throw.
+* #throw − A program throws an exception when a problem shows up. This is done using a throw keyword.
+
+* #catch − A program catches an exception with an exception handler at the place in a program where you want to handle the problem. The catch keyword indicates the catching of an exception.
+
+* #try − A try block identifies a block of code for which particular exceptions will be activated. It's followed by one or more catch blocks.
+```CPP
+#include <iostream>
+using namespace std;
+
+int main()
+{
+   int x = -1;
+
+   // Some code
+   cout << "Before try \n";
+   try {
+      cout << "Inside try \n";
+      if (x < 0)
+      {
+         throw x;
+         cout << "After throw (Never executed) \n";
+      }
+   }
+   catch (int x ) {
+      cout << "Exception Caught \n";
+   }
+
+   cout << "After catch (Will be executed) \n";
+   return 0;
+}
+```
+
+# Before you go on...
+## A review
+* Grouping of Error Types.
+* Separation of Error Handling code from Normal Code.
+* Functions/Methods can handle any exceptions they choose.