From 6297f4f04679bb45fdcf0e55b64094c049dc70fa Mon Sep 17 00:00:00 2001
From: sheepwall <a.sve@live.se>
Date: Fri, 8 Mar 2019 14:43:51 +0100
Subject: [PATCH] bare3_3
---
examples/bare3.rs | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/examples/bare3.rs b/examples/bare3.rs
index caeba37..31e2475 100644
--- a/examples/bare3.rs
+++ b/examples/bare3.rs
@@ -40,7 +40,7 @@ fn main() -> ! {
hprintln!("").unwrap();
let a: [u8; 4] = [65u8; 4];
- //let mut a = [0u8; 4];
+ let mut a = [0u8; 4];
hprintln!("").unwrap();
hprintln!("a = {}", core::str::from_utf8(&a).unwrap()).unwrap();
@@ -98,7 +98,9 @@ fn main() -> ! {
//`
// Run the program, what happens and why?
//
-// ** your answer here **
+// ** Rust allows this shadowing and therefore builds without error.
+// When the program runs, the last hprintln! prints "a =" without any characters.
+// This is because a = [0, 0, 0, 0] and 0 in utf8 is the NULL character. **
//
// Commit your answers (bare3_3)
//
--
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