Initialization discards qualifiers from pointer target type

Question

I\'m trying to print the list of a singly linked list that I referred to in link text. It works, but I do get the compiler warnings:

Initializat

Answer 1

It's this part:

LIST *start = head;

The parameter for the function is a pointer to a constant, const LIST *head; this means you cannot change what it is pointing to. However, the pointer above is to non-const; you could dereference it and change it.

It needs to be const as well:

const LIST *start = head;

The same applies to your return type.

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All the compiler is saying is: "Hey, you said to the caller 'I won't change anything', but you're opening up opportunities for that."