"999 is enough for anybody" triple-zero padding (#18)

When I hit 999 exercises, I will finally have reached the ultimate
state of soteriological release and no more exercises will be needed.
The cycle will be complete. All that will be left is perfect quietude,
freedom, and highest happiness.

exercises/034_quiz4.zig

@@ -0,0 +1,24 @@
+//
+// Quiz time. See if you can make this program work!
+//
+// Solve this any way you like, just be sure the output is:
+//
+//     my_num=42
+//
+const std = @import("std");
+
+const NumError = error{IllegalNumber};
+
+pub fn main() void {
+    const stdout = std.io.getStdOut().writer();
+
+    const my_num: u32 = getNumber();
+
+    try stdout.print("my_num={}\n", .{my_num});
+}
+
+// Just don't modify this function. It's "perfect" the way it is. :-)
+fn getNumber() NumError!u32 {
+    if (false) return NumError.IllegalNumber;
+    return 42;
+}