From bb89e3f35d3ea515166f390cf7968c716c569614 Mon Sep 17 00:00:00 2001
From: Jidong Xiao <xiaoj8@rpi.edu>
Date: Tue, 14 Nov 2023 13:49:55 -0500
Subject: [PATCH] adding the functor program

---
 lectures/21_hash_tables_II/functor.cpp | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
 create mode 100644 lectures/21_hash_tables_II/functor.cpp

diff --git a/lectures/21_hash_tables_II/functor.cpp b/lectures/21_hash_tables_II/functor.cpp
new file mode 100644
index 0000000..25bddb5
--- /dev/null
+++ b/lectures/21_hash_tables_II/functor.cpp
@@ -0,0 +1,17 @@
+#include <iostream>
+
+class MyFunctor {
+public:
+    int operator()(int x, int y) {
+        return x + y;
+    }
+};
+
+int main() {
+    MyFunctor myFunc;
+    int result = myFunc(3, 4);  // This calls the overloaded () operator.
+    // result now holds the value 7.
+    std::cout << "result is " << result << std::endl;
+    return 0;
+}
+