Why my code is not working?

#1


binary tree preorder implementation

#2

first in print tree u write if(root=NULL), yha pai if(root==NULL) ayga.
i hope u get it.
and apne input mai - 1 likha hua hai - kai baad gap nhi dena uske dirrect baad number likho.

#3

it’s working thanks,…

#4

resolve the doubt thanks.

#5

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