From 20e5bb2b1933e3b2430a12f46f7b542e8f606617 Mon Sep 17 00:00:00 2001 From: Dave Gauer Date: Sun, 4 Apr 2021 16:38:40 -0400 Subject: Explaining undefined 0xAA in 038 (for issue #43) --- exercises/038_structs2.zig | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) (limited to 'exercises/038_structs2.zig') diff --git a/exercises/038_structs2.zig b/exercises/038_structs2.zig index b0db022..4f2ce48 100644 --- a/exercises/038_structs2.zig +++ b/exercises/038_structs2.zig @@ -4,7 +4,7 @@ // them to functions, etc. // // This exercise demonstrates how we can store structs in an array and -// how doing so lets us print them all (both) using a loop. +// how doing so lets us print them using a loop. // const std = @import("std"); @@ -50,3 +50,9 @@ pub fn main() void { }); } } + +// If you tried running the program without adding Zump as mentioned +// above, you get what appear to be "garbage" values. In debug mode +// (which is the default), Zig writes the repeating pattern "10101010" +// in binary (or 0xAA in hex) to all undefined locations to make them +// easier to spot when debugging. -- cgit v1.2.3-ZIG