1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
/* For copyright information, see olden_v1.0/COPYRIGHT */ /* tree.h */ typedef struct tree { int val; struct tree *left, *right; } tree_t; #ifndef SS_PLAIN #define NULL 0 #endif SS_PLAIN extern tree_t *TreeAlloc (/*int level*/); extern int level; extern int iters;