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;
}