progress

exercises/030_switch.zig

@@ -46,6 +46,9 @@ pub fn main() void {
             // match for every possible value).  Please add an "else"
             // to this switch to print a question mark "?" when c is
             // not one of the existing matches.
+            else => {
+                std.debug.print("?", .{});
+            },
         }
     }