8

commit 843bda1dd605a7dfbeab4349669945d6ae71d5ac
parent d804131ea9e814054e08ce16e90009b87b199522
Author: Naveen Narayanan <nan@sysgo.com>
Date:   Sun,  6 Mar 2022 16:17:48 +0100

Add usage()

Diffstat:
M
8.c
 | 
12
+++++++++++-

1 file changed, 11 insertions(+), 1 deletion(-)
diff --git a/8.c b/8.c
@@ -292,8 +292,18 @@ cycle()
 	}
 }
 
+static void
+usage()
+{
+	fprintf(stderr, "usage: 8 file.rom\n");
+	exit(1);
+}
+
 int
 main(int argc, char **argv)
 {
-	printf("Welcome to 8\n");
+	if (argc < 2)
+		usage();
+
+	return 0;
 }