Merge pull request #884 from jadijadi/jadijadi_25-Chief_Rust

Rust port for 25_Chief

25_Chief/rust/Cargo.toml

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

25_Chief/rust/README.md

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+Original source downloaded [from Vintage Basic](http://www.vintage-basic.net/games.html)
+
+Conversion to [Rust](https://www.rust-lang.org/) by [Jadi](https://github.com/jadijadi)

25_Chief/rust/src/main.rs

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+use std::io;
+
+fn print_center(text: String, width: usize) {
+    let pad_size: usize = if width > text.len() {
+        (width - text.len()) / 2
+    } else {
+        0
+    };
+    println!("{}{}", " ".repeat(pad_size), text);
+}
+
+fn send_lightening() {
+    println!(
+        "YOU HAVE MADE ME MAD!!!
+THERE MUST BE A GREAT LIGHTNING BOLT!
+
+                              X X
+                             X X
+                            X X
+                           X X
+                          X X
+                         X X
+                        X X
+                       X X
+                      X X
+                     X XXX
+                    X   X
+                   XX X
+                    X X
+                   X X
+                  X X
+                 X X
+                X X
+               X X
+              X X
+             X X
+            XX
+           X
+          *
+
+#########################
+
+I HOPE YOU BELIEVE ME NOW, FOR YOUR SAKE!!"
+    );
+}
+
+fn check_yes_answer() -> bool {
+    // reads from input and return true if it starts with Y or y
+
+    let mut answer: String = String::new();
+    io::stdin()
+        .read_line(&mut answer)
+        .expect("Error reading from stdin");
+
+    answer.to_uppercase().starts_with('Y')
+}
+
+fn main() {
+    const PAGE_WIDTH: usize = 64;
+    print_center("CHIEF".to_string(), PAGE_WIDTH);
+    print_center(
+        "CREATIVE COMPUTING  MORRISTOWN, NEW JERSEY".to_string(),
+        PAGE_WIDTH,
+    );
+    println!("\n\n\n");
+
+    println!("I AM CHIEF NUMBERS FREEK, THE GREAT INDIAN MATH GOD.");
+    println!("ARE YOU READY TO TAKE THE TEST YOU CALLED ME OUT FOR?");
+
+    if !check_yes_answer() {
+        println!("SHUT UP, PALE FACE WITH WISE TONGUE.");
+    }
+
+    println!("TAKE A NUMBER AND ADD 3. DIVIDE THIS NUMBER BY 5 AND");
+    println!("MULTIPLY BY 8. DIVIDE BY 5 AND ADD THE SAME. SUBTRACT 1.");
+    println!("  WHAT DO YOU HAVE?");
+
+    // read a float number
+    let mut answer: String = String::new();
+    io::stdin()
+        .read_line(&mut answer)
+        .expect("Error reading from stdin");
+    let guess: f32 = answer.trim().parse().expect("Input not a number");
+
+    let calculated_answer: f32 = (guess + 1.0 - 5.0) * 5.0 / 8.0 * 5.0 - 3.0;
+
+    println!("I BET YOUR NUMBER WAS {calculated_answer}. AM I RIGHT?");
+
+    if check_yes_answer() {
+        println!("BYE!!!");
+    } else {
+        println!("WHAT WAS YOUR ORIGINAL NUMBER?");
+
+        // read a float number
+        let mut answer: String = String::new();
+        io::stdin()
+            .read_line(&mut answer)
+            .expect("Error reading from stdin");
+        let claimed: f32 = answer.trim().parse().expect("Input not a number");
+
+        println!("SO YOU THINK YOU'RE SO SMART, EH?");
+        println!("NOW WATCH.");
+        println!(
+            "{claimed} PLUS 3 EQUALS {}. THIS DIVIDED BY 5 EQUALS {};",
+            claimed + 3.0,
+            (claimed + 3.0) / 5.0
+        );
+        println!(
+            "THIS TIMES 8 EQUALS {}. IF WE DIVIDE BY 5 AND ADD 5,",
+            (claimed + 3.0) / 5.0 * 8.0
+        );
+        println!(
+            "WE GET {} , WHICH, MINUS 1, EQUALS {}.",
+            ((claimed + 3.0) / 5.0 * 8.0 / 5.0) + 5.0,
+            ((claimed + 3.0) / 5.0 * 8.0 / 5.0) + 4.0
+        );
+        println!("NOW DO YOU BELIEVE ME?");
+
+        if check_yes_answer() {
+            println!("BYE!!!");
+        } else {
+            send_lightening();
+        }
+    }
+}
+
+////////////////////////////////////////////////////////////////////
+// Porting notes:
+// In floating point arithmetics in "modern" languages we might see
+// unfamiliar situations such as 6.9999999 instead of 7 and such.
+// resolving this needs using specific mathematical libraries which
+// IMO is out of scope in these basic programs
+///////////////////////////////////////////////////////////////////