diff --git a/src/main/c/Calculator/calculator.c b/src/main/c/Calculator/calculator.c
index 871b8b5..86dcaec 100644
--- a/src/main/c/Calculator/calculator.c
+++ b/src/main/c/Calculator/calculator.c
@@ -14,4 +14,16 @@ int main() {
         displayMenu();
         printf("Enter your choice: ");
         scanf("%d", &choice);
-switch (choice) {
\ No newline at end of file
+switch (choice) {
+       case 1:
+                printf("Enter two numbers: ");
+                scanf("%d %d", &num1, &num2);
+                result = add(num1, num2);
+                printf("Result: %d\n", result);
+                break;
+                 case 2:
+                printf("Enter two numbers: ");
+                scanf("%d %d", &num1, &num2);
+                result = subtract(num1, num2);
+                printf("Result: %d\n", result);
+                break;
\ No newline at end of file