How would you detect a loop in a linked list? Write a C program to detect a loop in a linked list.

typedef struct node 

{ 

void *data; 

struct node *next;

}mynode; 

mynode * find_loop(NODE * head)

{ 

mynode *current = head; 

while(current->next != NULL) 

{ 

mynode *temp = head; 

while(temp->next != NULL && temp != current)

{ 

if(current->next == temp) 

{ 

printf("\nFound a loop."); 

return current; 

} 

temp = temp->next;

} 

current = current->next;

} 

return NULL; 

}