diff --git a/exercises/sum.cpp b/exercises/sum.cpp
index 0dcca93..8ca730e 100644
--- a/exercises/sum.cpp
+++ b/exercises/sum.cpp
@@ -1,8 +1,14 @@
-/*
-  Write a program that takes as input two numbers and print the sum.
+#include <iostream>
+using namespace std;
 
-  Output:
-  Insert the first number: 1
-  Insert the second number: 2
-  Sum: 3
-*/
+int main() {
+    int a = 0;
+    cout <<"insert the first number: ";
+    cin >> a;
+    int b = 0;
+    cout <<"insert the second number: ";
+    cin >> b;
+    int c = a + b;
+    cout << "Sum: " << c << endl;
+    return 0;
+}