Visualize a tree: Difference between revisions

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@@ Line 70: / Line 70: @@
 typedef struct stem_t *stem;
-struct stem_t { char *str; stem next; };
+struct stem_t { const char *str; stem next; };
 void tree(int root, stem head)
 {
-	static char *sdown = "  |", *slast = "  `", *snone = "   ";
+	static const char *sdown = "  |", *slast = "  `", *snone = "   ";
 	struct stem_t col = {0, 0}, *tail;