diff --git a/src/main/c/Calculator/calculator.c b/src/main/c/Calculator/calculator.c
index 2a41295..4032bbc 100644
--- a/src/main/c/Calculator/calculator.c
+++ b/src/main/c/Calculator/calculator.c
@@ -62,4 +62,7 @@ void displayMenu() {
     printf("3. Multiply\n");
     printf("4. Divide\n");
     printf("5. Exit\n");
+}
+int add(int num1, int num2) {
+    return num1 + num2;
 }
\ No newline at end of file