exc. 34 migrated

exercises/034_quiz4.zig

@@ -6,15 +6,17 @@
 //     my_num=42
 //
 const std = @import("std");
+const io = std.Options.debug_io;
 
 const NumError = error{IllegalNumber};
 
 pub fn main() void {
-    var stdout = std.fs.File.stdout().writer(&.{});
+    var stdout_writer = std.Io.File.stdout().writer(io, &.{});
+    const stdout = &stdout_writer.interface;
 
     const my_num: u32 = getNumber();
 
-    try stdout.interface.print("my_num={}\n", .{my_num});
+    try stdout.print("my_num={}\n", .{my_num});
 }
 
 // This function is obviously weird and non-functional. But you will not be changing it for this quiz.