Question

I just got my test back and I was only able to spot 2 and our prof doesnt give us correct answers upon return.. wondering if you guys can help me spot 4 errors in this code for a linked list…

int main() {
  struct node 
 {
     int data;
     node * next; 
 }

// create empty list
node * list;

// insert six nodes at front of list
node *n;
for (int i=0;i<=5;i++)
{
  n = new node;
  n->data = i;
  n->next = list;
}
// print list
n = list;
while (!n) 
{
  cout << n->data << "  ";
  n = n->next; 
}
cout << endl;

Answer 1

• struct node missing ; at the end of it’s declaration
• list not initialized to NULL
• list isn’t pointing to the head after nodes insertion
• node allocation not checked for success
• printing loop is incorrect – should be while(n) instead of while(!n)