feat(book): add guessing_game

Author: meskill

.gitignore

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+.history
+
+/target
+/experiments

.vscode/settings.json

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+{
+  "workbench.colorCustomizations": {
+    "[Eva Light Bold]": {
+      "terminal.ansiYellow": "#b8ac04",
+      "terminal.ansiBrightBlack": "#f890c0"
+    }
+  },
+  "conventionalCommits.scopes": [
+    "book"
+  ]
+}

Cargo.lock

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+[workspace]
+members = ["experiments", "codewars/*", "book/*"]

Cargo.toml

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+The MIT License (MIT)
+
+Copyright (c) 2013 Mike Gehard, Exercism
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

LICENSE

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+/target

book/guessing_game/.gitignore

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+[package]
+name = "guessing_game"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+rand = "0.8.3"

book/guessing_game/Cargo.lock

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+use rand::Rng;
+use std::cmp::Ordering;
+use std::io;
+
+fn main() {
+    println!("Guess the number!");
+
+    let secret_number = rand::thread_rng().gen_range(1..101);
+
+    loop {
+        println!("Please input your guess.");
+
+        let mut guess = String::new();
+
+        io::stdin()
+            .read_line(&mut guess)
+            .expect("Failed to read line");
+
+        let guess: u32 = match guess.trim().parse() {
+            Ok(num) => num,
+            Err(_) => continue,
+        };
+
+        println!("You guessed {}", guess);
+
+        match guess.cmp(&secret_number) {
+            Ordering::Less => println!("Bigger"),
+            Ordering::Equal => {
+                println!("You win!");
+                break;
+            }
+            Ordering::Greater => println!("Less"),
+        }
+    }
+}