commenst add

src/app/directory.ts

-/** \file
-* Interface for Directory having attributes for storing it's child directories, files and the path where it is tored in the server.
-* Used in File management for providing User a workspace.
+/*! \file
+ Interface for Directory having attributes for storing it's child directories, files and the path where it is tored in the server.
+ Used in File management for providing User a workspace.
 */
 
 import {File} from './file';

src/app/file.ts

-/** \file
-* Interface for File having attributes for storing the extensions and contents of the file.
-* Used in services and components for storing the ide text and uploading the server, as well as 
-* compiling and executing programs.
+/*! \file
+ Interface for File having attributes for storing the extensions and contents of the file.
+ Used in services and components for storing the ide text and uploading the server, as well as 
+ compiling and executing programs.
 */
 
 export interface File {

src/app/problem.ts

-/** \file
-* A temporary Interface for Problem 
+/*! \file
+ A temporary Interface for Problem 
 */
 
 export interface Problem {

src/app/question.ts

-/** \file
-* Interface for Question which are to be uploaded by different users.
+/*! \file
+ Interface for Question which are to be uploaded by different users.
 */
 
 export interface Question {

src/app/user.ts

-/**  \file
-* Interface for User containing his/her details and login credentials.
-* Used in services and components as a data structure for each user.
+/*!  \file
+Interface for User containing his/her details and login credentials.
+Used in services and components as a data structure for each user.
 */
 
 export interface User {