What is the error in this code?

#1
#2

Change line 60 to while(temp->next!=NULL&&temp->next->data < d){
NULL->next at some moment was causing segmentation fault.

#3

still causing segmentation fault

#4
#5

I found some minor mistakes in line 54-59. Check now https://ide.codingblocks.com/s/251641

#6

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