Help with error

#1

sol: https://ide.codingblocks.com/s/417297

prob: https://hack.codingblocks.com/app/contests/2022/1339/problem

please check logic seems right to me

#2

Modified Code

mistake
if(data == NULL){

    return NULL;

}

you can’t compare NULL

Solution to problem is make data as string and compare
data with “NULL”
like this
if(data == “NULL”){
return NULL;
}

node* root = new node(stoi(data));

(string to int)
stoi => is a funtion used to convert string to int

#3

oh I initialized a value of an int variable to NULL and outputted it and the output came to be 0 so I thought this should work.

#4

I did using strings but it is raising some error

#5

I have sent the modified Code
in which i resolve all the errors so that you didn’t need to ask doubt again
plz check that code

#6

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