update ch02-00

Author: puripuri2100

listings/ch02-guessing-game-tutorial/listing-02-01/Cargo.toml

@@ -1,8 +1,7 @@
 [package]
 name = "guessing_game"
 version = "0.1.0"
-authors = ["Your Name <you@example.com>"]
-edition = "2018"
+edition = "2021"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 

listings/ch02-guessing-game-tutorial/listing-02-02/Cargo.lock

@@ -1,10 +1,9 @@
 [package]
 name = "guessing_game"
 version = "0.1.0"
-authors = ["Your Name <you@example.com>"]
-edition = "2018"
+edition = "2021"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-rand = "0.5.5"
+rand = "0.8.3"

listings/ch02-guessing-game-tutorial/listing-02-02/Cargo.toml

@@ -1,10 +1,9 @@
 [package]
 name = "guessing_game"
 version = "0.1.0"
-authors = ["Your Name <you@example.com>"]
-edition = "2018"
+edition = "2021"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-rand = "0.5.5"
+rand = "0.8.3"

listings/ch02-guessing-game-tutorial/listing-02-03/Cargo.lock

@@ -8,7 +8,7 @@ fn main() {
     println!("Guess the number!");
 
     // ANCHOR: ch07-04
-    let secret_number = rand::thread_rng().gen_range(1, 101);
+    let secret_number = rand::thread_rng().gen_range(1..101);
     // ANCHOR_END: ch07-04
 
     println!("The secret number is: {}", secret_number);