Data commit

Task/Nim-game/Rust/nim-game.rust

@@ -0,0 +1,58 @@
+fn main() {
+    let mut tokens = 12;
+    println!("Nim game");
+    println!("Starting with {} tokens.", tokens);
+    println!("");
+
+    loop {
+        tokens = p_turn(&tokens);
+        print_remaining(&tokens);
+        tokens = c_turn(&tokens);
+        print_remaining(&tokens);
+
+        if tokens == 0 {
+            println!("Computer wins!");
+            break;
+        }
+    }
+}
+
+fn p_turn(tokens: &i32) -> i32 {
+    loop {  //try until we get a good number
+        println!("How many tokens would you like to take?");
+
+        let mut take = String::new();
+        io::stdin().read_line(&mut take)
+            .expect("Sorry, I didn't understand that.");
+
+        let take: i32 = match take.trim().parse() {
+            Ok(num) => num,
+            Err(_) => {
+                println!("Invalid input");
+                println!("");
+                continue;
+            }
+        };
+
+        if take > 3 || take < 1 {
+            println!("Take must be between 1 and 3.");
+            println!("");
+            continue;
+        }
+
+        return tokens - take;
+    }
+}
+
+fn c_turn(tokens: &i32) -> i32 {
+    let take = tokens % 4;
+
+    println!("Computer takes {} tokens.", take);
+
+    return tokens - take;
+}
+
+fn print_remaining(tokens: &i32) {
+    println!("{} tokens remaining.", tokens);
+    println!("");
+}