Someone

#include <stdio.h>#include <stdlib.h>struct list {    int node;    struct list *next;};int sum(const struct list *x) {    if (x == NULL)        return 0;    else        return x->node + sum(x->next);}int main(void) {    /* Is there no shorter way? */    struct list node3 = { 3, NULL };    struct list node2 = { 2, &node3 };    struct list node1 = { 1, &node2 };    struct list *llist = &node1;    printf("%d\n", sum(llist));    /* Just to make sure llist wasn't modified. */    printf("%d\n", sum(llist));     return EXIT_SUCCESS;}