To define a function named remove to remove all nodes with same value as the input

Assume: we already have the setup as below: Typedef struct node node; struct node { int data; node *next; } Eg, before remove(), the list as 1 -> 2 -> 3 -> 2 -> 1 after calling remove(&head, 2); the list as 1 -> 3 -> 1

/* return 1 if removing is succeeded; return 0 otherwise */