--- exercises/034_quiz4.zig	2023-10-03 22:15:22.122241138 +0200
+++ answers/034_quiz4.zig	2023-10-05 20:04:06.996099091 +0200
@@ -9,10 +9,10 @@
 
 const NumError = error{IllegalNumber};
 
-pub fn main() void {
+pub fn main() !void {
     const stdout = std.io.getStdOut().writer();
 
-    const my_num: u32 = getNumber();
+    const my_num: u32 = try getNumber();
 
     try stdout.print("my_num={}\n", .{my_num});
 }