Please I am getting segmentation fault please help me

#1
#2

You are getting segmentation fault because in your sample your having nodes from 0 to 8, so that is 9 nodes in total, but your parent array has space for only 8 nodes, so adjust accordingly.

#3

Maybe this is how you want your code to work https://ide.codingblocks.com/s/428853

#4

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