9. C++ Comments

• 
      // comments from there to end of line
  
      /*
          multi-line
          comment
      */
  
  

• Avoid mixing comments, since neither type respects the other:

  
      // this --> /* is not effective
      so this becomes an error */
      /* this --> // is not effective */ so this is an error
  
  
  

• Some compilers may give you a warning when comments are mixed.