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mychem97
mychem97

Reputation: 51

Replace Node in Linked List

I have a function that needs to replace a node of a specified value in the list (old), and replace that node with a new value specified by the user (new). This is what I've come up with, but it makes my program stop working so something's wrong with what I've conjured up.

node *modifyNode(node *L, int old, int new)
{
    while (L != NULL)
    {
        if(L->val == old)
        {
            L->val = new;

        }
    }
    L = L->next;
}

Upvotes: 2

Views: 9217

Answers (2)

hulud
hulud

Reputation: 21

new is a keyword in c++, can not be used as a variable name

 node *modifyNode(node *L, int old, int _new)
 {
     while (L != NULL)
     {
       if(L->val == old)
       {
          L->val = _new; //new is a keyword

       }
       L = L->next; //reposition this here
     }
}

Upvotes: 0

Nutan
Nutan

Reputation: 786

position of the L = L->next; should be in the loop 

 node *modifyNode(node *L, int old, int new)
 {
     while (L != NULL)
     {
       if(L->val == old)
        {
          L->val = new;

        }
      L = L->next; // this should be position to refer next node in the loop
}

}

Upvotes: 1

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