Wrong anti-spam code

Formulation

Create a function contentOfTheHead that returns the content of the head of the linked list. The argument of the function is aHead. It is the pointer that contains the address of the head. If the function receives the nullptr, then the function should return -777. However, if the function receives a pointer to the head of a real linked list, then it should return the content. Your code should replace the text // ??? // below.

long contentOfTheHead(ListNode* aHead){
   if(aHead==nullptr){return -777;}
   // ??? //
}

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