diff --git a/src/v1.cpp b/src/v1.cpp
index 5d7e25c..32ad91b 100644
--- a/src/v1.cpp
+++ b/src/v1.cpp
@@ -3,10 +3,27 @@
 
 #include <iostream>
 
+int add(int a, int b)
+{
+    return a + b;
+}
+
+int subtract(int a, int b)
+{
+    return a - b;
+}
+
 int main()
 {
     std::cout << "Hello World!\n";
     std::cout << "Version Control Lab" << std::endl;
+
+    int addResult = add(5, 3);
+    int subtractResult = subtract(10, 4);
+
+    std::cout << "5 + 3 = " << addResult << std::endl;
+    std::cout << "10 - 4 = " << subtractResult << std::endl;
+
     return 0;
 }