// Sometimes it's useful to _enumerate_ all elements of a set. // For instance, all binary strings of a specific length. size =3 : 000 001 010 011 100 101 110 111 // // If the length is known, can use loops like following: // void print_all_binary_strings_of_length_3() { for (int i = 0; i  
 
 
 
Draw recursion tree for both print_all_binary_strings_version1 and print_all_binary_strings_version2 functions, for the parameters given in main function. (One recursion tree for each function). At every circle (node) in the recursion tree, write the value of partial, and n (An imcomplete recursion tree for the version1 is attached.)C++
  Fun("",3) Partial = n = 3 Fun("0"3 Partial = "0" n = 3