Final commit

Rewrite of our original try

tree/src/tree.c

@@ -92,20 +92,26 @@ void tree_erase(Tree *tree, int age, char *name)
 }
 
 // Helper function: you are allowed to change this to your preferences
-void tree_print_node(Node *node)
+// start with numTabs = 0
+void tree_print_node(Node *node, int numTabs)
 {
     if (node == NULL)
     {
+        printTabs(numTabs);
         printf("null");
         return;
     }
 
-    printf("[");
-    printf("{\"%d\":\"%s\"},", node->age, node->name);
-    tree_print_node(node->left);
-    printf(",");
-    tree_print_node(node->right);
-    printf("]");
+    printTabs(numTabs);
+    printf("{\n");
+    printTabs(numTabs + 1);
+    printf("\"%d\":\"%s\",\n", node->age, node->name);
+    tree_print_node(node->left, numTabs + 1);
+    printf(",\n");
+    tree_print_node(node->right, numTabs + 1);
+    printf("\n");
+    printTabs(numTabs);
+    printf("}");
 }
 
 // Tree function: you are allowed to change the contents, but not the method signature
@@ -113,11 +119,11 @@ void tree_print(Tree *tree, int printNewline)
 {
     if (tree == NULL)
     {
-        printf("null");
+        printf("Tree pointer points to null");
         return;
     }
 
-    tree_print_node(tree->root);
+    tree_print_node(tree->root, 0);
 
     if (printNewline)
     {