TheAlgorithms-C/leetcode/src/83.c

struct ListNode *deleteDuplicates(struct ListNode *head)
{
    struct ListNode *cur = head;
    while (cur && cur->next)
    {
        if (cur->val == cur->next->val)
            cur->next = cur->next->next;
        else
            cur = cur->next;
    }
    return head;
}