Compilation error in identical binary tree

#1


this is showing compilation errors.Also I am not able to understand the way of taking input i.e. the reason of NULL being written in the sample input and then the way is also not clear.Please help.

#2

hello @srshubhi398
ur build tree is not correct.
image

first read root node.
then check whether left subtree exist or not by reading a string .
if it is true that means left subtree exist ,so build left tree recursively
otherwise assign NULL to left of current node.

again read one more string to check whether right subtree exist or not.
if it exist(string is true) then build it recursively
otherwise
assign NULL to right of current node

and at the end return current node

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#3

Thankyou so much.I understood.

#4

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