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changeset 69:eecddded9b91

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implement printTree
author Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
date Wed, 12 Aug 2015 15:10:50 +0900
parents d27b3af1fe75
children 87dff3a124ab
files c/regexParser/main.cc
diffstat 1 files changed, 10 insertions(+), 8 deletions(-) [+]
line wrap: on
line diff
--- a/c/regexParser/main.cc	Tue Aug 11 19:46:33 2015 +0900
+++ b/c/regexParser/main.cc	Wed Aug 12 15:10:50 2015 +0900
@@ -203,21 +203,23 @@
  *       a
  */
 
-void descendTree(NodePtr n,int d) {
+void descendTree(NodePtr n) {
+    static int d = 0;
     if (n->right != NULL) {
         d++;
-        descendTree(n->right, d);
-    } else if (n->left != NULL) {
+        descendTree(n->right);
+        d--;
+    }
+    printf("%*c%c\n",d*4, ' ',n->Value.character);
+    if (n->left != NULL) {
         d++;
-        descendTree(n->right, d);
-    } else {
-        printf("%c\n",n->Value.character);
+        descendTree(n->left);
+        d--;
     }
 }
 
 void printTree(NodePtr n) {
-    int depth = 0;
-    descendTree(n,depth);
+    descendTree(n);
 }