programming languages - Shallow & Deep Binding - What would this program print? -

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I'm not sure how to do this ... 

  function f1 () { Var x = 10; Function F2 (fx) {var x; X = 6; Fx (); }; Function F3 () {Print X; }; F2 (f3); };   
 For the following two binding methods, what will the program print? A) shallow binding B) Deep binding  
 Thanks for the help!   
 
 
 Deep / shallow binding only makes sense when a procedure passes as a logic of a function can be done.  
     
  •   Deep binding  binds the environment when any process is passed logic.  
  •   Shallow bondage  binds the environment when a process is actually called.    
      Deep binding.   
     Here  f3 ()  is  f1 ()  / em> and  x  of  10  which is the local variable of  f1 () .  
      shallow binding   
      f3 ()  is called in  f2 ()  and hence the environment of  f2 () gets  and prints the value of x 6 which is local  f2 ()

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