修改目录结构，优化CMakeLists

src/110.c

@@ -0,0 +1,28 @@
+#include "include/TreeNode.h"
+#include <math.h>
+#include <stdbool.h>
+#include <stdlib.h>
+
+int maxHight(struct TreeNode *root)
+{
+    if (!root)
+        return 0;
+
+    return fmax(maxHight(root->left), maxHight(root->right)) + 1;
+}
+
+bool isBalanced(struct TreeNode *root)
+{
+    if (!root)
+        return true;
+    if (!isBalanced(root->left))
+        return false;
+    if (!isBalanced(root->right))
+        return false;
+    return abs(maxHight(root->left) - maxHight(root->right)) <= 1;
+}
+
+int main()
+{
+    return 0;
+}