This code is giving segmentation fault but as soon as i repalce *sum=*sum+1 with only *sum , it is working fine. why am i not able to increment the value of sum in the function using pointers?
Segmentation fault
@pranaynigam
your code is not giving segmentation fault because of *sum = *sum+ 1 it is updating sum correctly inside function.
you are getting segmentation fault because inside if condition at line 47 of your code you are accessing root->left->data and root->right->data without checking if both root->left and root->right are not null.
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