diff --git a/exercises/sum.cpp b/exercises/sum.cpp
index 0dcca93..4353fc5 100644
--- a/exercises/sum.cpp
+++ b/exercises/sum.cpp
@@ -6,3 +6,20 @@
   Insert the second number: 2
   Sum: 3
 */
+
+#include <iostream>
+
+int main()
+{
+    double first = 0;
+    double second = 0;
+
+    std::cout << "Insert the first number: ";
+    std::cin >> first;
+    std::cout << "Insert the second number: ";
+    std::cin >> second;
+
+    std::cout << "Sum: " << first + second << std::endl;
+
+    return 0;
+}