From 452f7bfd5d11170ef51743e0dd082e1164a280d1 Mon Sep 17 00:00:00 2001
From: Lynn Leichtle <lynn@lynn.sh>
Date: Mon, 16 Sep 2024 12:32:46 +0200
Subject: [PATCH] better error handling

---
 src/main.zig | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/main.zig b/src/main.zig
index cb10264..4744320 100644
--- a/src/main.zig
+++ b/src/main.zig
@@ -51,6 +51,13 @@ fn handleMemoryCommand(memory: *mem.Memory, it: anytype) !void {
                 const value = try std.fmt.parseUnsigned(u8, maybe_value.?, 10);
                 _ = try memory.writeByte(addr, value);
             }
+        } else {
+            std.debug.print(
+                \\Invalid argument '{s}'. Usage:
+                \\ mem read <addr>
+                \\ mem write <adrr> <value>
+                \\
+            , .{next_argument});
         }
     }
 }