printtree

tree.c

/**
 * Copyright (c) 2012, Yohei Yamaguchi.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the Software
 * is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */


void printtree(node_t *n)
{
    static int depth = 0;
    if (n->left != NULL) {
        ++depth;
        print(n->left);
        --depth;
    }
    printf("%*c%d\n", depth * 5, ' ', n->key);
    if (n->right != NULL) {
        ++depth;
        print(n->right);
        --depth;
    }
}

/*
input: 8, 3, 10, 1, 6, 4, 7, 14, 13
output: 
          1
     3
               4
          6
               7
 8
     10
               13
          14
*/