diff --git a/a3/binary_search_tree.c b/a3/binary_search_tree.c
new file mode 100644
index 0000000..45ef99c
--- /dev/null
+++ b/a3/binary_search_tree.c
@@ -0,0 +1,32 @@
+#include <stdlib.h>
+
+typedef struct Node {
+    int data;
+    struct Node* left;
+    struct Node* right;
+} Node;
+
+Node* newNode(int data) {
+    Node* node = (Node*)malloc(sizeof(Node));
+    node->data = data;
+    node->left = NULL;
+    node->right = NULL;
+    return(node);
+}
+
+Node* insert(Node* node, int data) {
+    if (node == NULL) {
+        return(newNode(data));
+    }
+    else {
+        if (data <= node->data) node->left = insert(node->left, data);
+        else node->right = insert(node->right, data);
+        return(node);
+    }
+}
+
+int search(Node* root, int x) {
+    if(root == NULL || root->data == x) return root;
+    else if(root->data < x) return search(root->right, x);
+    else return search(root->left, x);
+}