add Rust hello world!

Cargo.lock

@@ -0,0 +1,7 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 4
+
+[[package]]
+name = "hello_world"
+version = "0.1.0"

Cargo.toml

@@ -0,0 +1,8 @@
+[package]
+name = "hello_world"
+version = "0.1.0"
+edition = "2021"
+
+[[bin]]
+name = "hello_world"
+path = "src/main.rs"

src/main.rs

@@ -0,0 +1,20 @@
+// Rust Hello World 示範程式
+// 編譯並執行：cargo run
+
+fn main() {
+    // println! 是 Rust 的巨集（macro），用來印出字串並換行
+    println!("Hello, World!");
+    println!("你好，世界！");
+
+    // 變數宣告（預設為不可變）
+    let name = "Rust";
+    println!("歡迎使用 {} 程式語言！", name);
+
+    // 呼叫自訂函式
+    greet("開發者");
+}
+
+/// 一個簡單的問候函式
+fn greet(who: &str) {
+    println!("Hi, {}! 這是一個 Rust 範例。", who);
+}

target/.rustc_info.json

@@ -0,0 +1 @@
+{"rustc_fingerprint":477736733871148030,"outputs":{"7971740275564407648":{"success":true,"status":"","code":0,"stdout":"___.exe\nlib___.rlib\n___.dll\n___.dll\nlib___.a\n___.dll\nC:\\Users\\alan\\.rustup\\toolchains\\stable-x86_64-pc-windows-gnu\noff\n___\ndebug_assertions\npanic=\"unwind\"\nproc_macro\ntarget_abi=\"\"\ntarget_arch=\"x86_64\"\ntarget_endian=\"little\"\ntarget_env=\"gnu\"\ntarget_family=\"windows\"\ntarget_feature=\"cmpxchg16b\"\ntarget_feature=\"fxsr\"\ntarget_feature=\"sse\"\ntarget_feature=\"sse2\"\ntarget_feature=\"sse3\"\ntarget_has_atomic=\"128\"\ntarget_has_atomic=\"16\"\ntarget_has_atomic=\"32\"\ntarget_has_atomic=\"64\"\ntarget_has_atomic=\"8\"\ntarget_has_atomic=\"ptr\"\ntarget_os=\"windows\"\ntarget_pointer_width=\"64\"\ntarget_vendor=\"pc\"\nwindows\n","stderr":""},"17747080675513052775":{"success":true,"status":"","code":0,"stdout":"rustc 1.94.0 (4a4ef493e 2026-03-02)\nbinary: rustc\ncommit-hash: 4a4ef493e3a1488c6e321570238084b38948f6db\ncommit-date: 2026-03-02\nhost: x86_64-pc-windows-gnu\nrelease: 1.94.0\nLLVM version: 21.1.8\n","stderr":""}},"successes":{}}

target/CACHEDIR.TAG

@@ -0,0 +1,3 @@
+Signature: 8a477f597d28d172789f06886806bc55
+# This file is a cache directory tag created by cargo.
+# For information about cache directory tags see https://bford.info/cachedir/

target/debug/.fingerprint/hello_world-10a543a465de4575/bin-hello_world

@@ -0,0 +1 @@
+288379d2cbea7723

target/debug/.fingerprint/hello_world-10a543a465de4575/bin-hello_world.json

@@ -0,0 +1 @@
+{"rustc":13073507457223000659,"features":"[]","declared_features":"[]","target":10933677794921727520,"profile":8731458305071235362,"path":4942398508502643691,"deps":[],"local":[{"CheckDepInfo":{"dep_info":"debug\\.fingerprint\\hello_world-10a543a465de4575\\dep-bin-hello_world","checksum":false}}],"rustflags":[],"config":8247474407144887393,"compile_kind":0}

target/debug/.fingerprint/hello_world-10a543a465de4575/invoked.timestamp

@@ -0,0 +1 @@
+This file has an mtime of when this was started.

target/debug/.fingerprint/hello_world-28821d0d93adece6/bin-hello_world

@@ -0,0 +1 @@
+abfb746d06de7608

target/debug/.fingerprint/hello_world-28821d0d93adece6/bin-hello_world.json

@@ -0,0 +1 @@
+{"rustc":13073507457223000659,"features":"[]","declared_features":"[]","target":10933677794921727520,"profile":17672942494452627365,"path":4942398508502643691,"deps":[],"local":[{"CheckDepInfo":{"dep_info":"debug\\.fingerprint\\hello_world-28821d0d93adece6\\dep-bin-hello_world","checksum":false}}],"rustflags":[],"config":8247474407144887393,"compile_kind":0}

target/debug/.fingerprint/hello_world-28821d0d93adece6/invoked.timestamp

@@ -0,0 +1 @@
+This file has an mtime of when this was started.

target/debug/deps/hello_world-10a543a465de4575.d

@@ -0,0 +1,5 @@
+D:\@dev_HuKui\helloWorld\target\debug\deps\hello_world-10a543a465de4575.d: src\main.rs
+
+D:\@dev_HuKui\helloWorld\target\debug\deps\hello_world-10a543a465de4575.exe: src\main.rs
+
+src\main.rs:

target/debug/deps/hello_world-28821d0d93adece6.d

@@ -0,0 +1,5 @@
+D:\@dev_HuKui\helloWorld\target\debug\deps\hello_world-28821d0d93adece6.d: src\main.rs
+
+D:\@dev_HuKui\helloWorld\target\debug\deps\libhello_world-28821d0d93adece6.rmeta: src\main.rs
+
+src\main.rs:

target/debug/hello_world.d

@@ -0,0 +1 @@
+D:\@dev_HuKui\helloWorld\target\debug\hello_world.exe: D:\@dev_HuKui\helloWorld\src\main.rs