diff --git a/buggy_script.py b/buggy_script.py
new file mode 100644
index 0000000..05aae35
--- /dev/null
+++ b/buggy_script.py
@@ -0,0 +1,50 @@
+import time
+
+# 1. 逻辑/语法错误：函数定义缺少冒号，且缩进不规范
+def calculate_discount(price, discount):
+    final_price = price * (1 - discount)
+    return final_price
+
+# 2. 陷阱：使用可变对象（列表）作为默认参数
+def add_item_to_cart(item, cart=[]):
+    cart.append(item)
+    return cart
+
+class User:
+    # 3. 拼写错误：初始化方法写成了 _init_ 而不是 __init__
+    def _init_(self, name, age):
+        self.name = name
+        self.age = age
+
+    def greet(self):
+        # 4. 类型错误：尝试将字符串和整数直接连接
+        print("Hello, I am " + self.name + " and I am " + self.age + " years old.")
+
+def main():
+    print("Welcome to the shop!")
+    
+    # 5. 逻辑错误：运算符误用 (^ 在 Python 中是异或，不是幂运算)
+    square_area = 10 ^ 2 
+    print(f"Area calculation check: {square_area}") 
+
+    # 6. 语法错误：在 if 条件中使用了赋值运算符 (=) 而不是比较运算符 (==)
+    user_input = "yes"
+    if user_input = "yes":
+        print("User agreed.")
+
+    # 7. 运行时错误：IndexError (索引越界)
+    items = ["Apple", "Banana", "Orange"]
+    for i in range(len(items) + 1):
+        print(f"Item {i}: {items[i]}")
+
+    # 8. 运行时错误：ZeroDivisionError (除以零)
+    count = 0
+    total = 100
+    average = total / count
+    print("Average: " + average)
+
+# 9. 拼写错误：name 变量拼写错误
+if __name__ == "__main__":
+
+    mian()
+
diff --git a/c_security_test.c b/c_security_test.c
index b7f0def..00fba31 100644
--- a/c_security_test.c
+++ b/c_security_test.c
@@ -17,9 +17,33 @@ int integer_overflow_vuln(int count, int size) {
     return total_bytes;
 }
 
+void memoryLeakVuln() {
+    int* data = new int[100];
+    if (data == nullptr) return;
+
+    data[0] = 1;
+    std::cout << "Memory allocated and leaked." << std::endl;
+}
+void memoryLeakVuln2() {
+    int* data = new int[100];
+    if (data == nullptr) return;
+
+    data[0] = 1;
+  delete[] data;
+    std::cout << "Memory allocated and leaked." << std::endl;
+}
+void memoryLeakVuln3() {
+    int* data = new int[100];
+    if (data == nullptr) return;
+
+    data[0] = 1;
+  delete data;
+    std::cout << "Memory allocated and leaked." << std::endl;
+}
 
 int main(int argc, char* argv[]) {
     buffer_overflow_vuln(argv[1]);
     int result = integer_overflow_vuln(INT_MAX, 2);
     return 0;
-}
\ No newline at end of file
+
+}