diff --git a/src/hello.c b/src/hello.c
index c9a246f..29191eb 100644
--- a/src/hello.c
+++ b/src/hello.c
@@ -1,5 +1,12 @@
 #include <stdio.h>
 
-int main() {
+int main(int argc, int argv[]) {
     puts("Hello, world!\r\n");
+
+    if (argc > 1) {
+        return argv[0] + argv[1];
+    } else if (argc > 0) {
+        return argv[0];
+    }
+    return 0x42;
 }