Added treeset

examples/tree_print.c

@@ -0,0 +1,43 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+#include "../src/treeset.h"
+
+TREESET_GENERATE(set, set, , , int)
+
+void print_tree(set_node *root, int height)
+{
+    if (!root)
+        return;
+
+    print_tree(root->right, height + 1);
+
+    for (int i = 0; i < height; i++)
+        printf("|------- ");
+
+    printf("%d\n", root->key);
+
+    print_tree(root->left, height + 1);
+}
+
+int intcmp(int a, int b)
+{
+    return a - b;
+}
+
+int main(int argc, char const *argv[])
+{
+    srand((unsigned)time(NULL));
+    set *set1 = set_new(intcmp);
+
+    for (int i = 0; i < 31; i++)
+    {
+        set_insert(set1, i);
+    }
+
+    print_tree(set1->root, 0);
+
+    set_free(set1);
+
+    return 0;
+}