cowsay is like hello world

.gitignore

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+/target

Cargo.lock

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+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "cowsay"
+version = "0.1.0"

Cargo.toml

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

src/cow.rs

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+use std::fmt;
+
+const COW: &str = r#"        \   ^__^
+         \  (oo)\_______
+            (__)\       )\/\
+                ||----w |
+                ||     ||"#;
+
+pub struct Cow {
+    text: String,
+    cow: String,
+}
+
+impl Cow {
+    pub fn new(s: String) -> Cow {
+        return Cow {
+            text: s,
+            cow: COW.to_string(),
+        };
+    }
+}
+
+impl std::fmt::Display for Cow {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        write!(f, "<{}>\n{}\n", self.text, self.cow)
+    }
+}

src/main.rs

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+use std;
+mod cow;
+
+fn main() {
+    let args: Vec<String> = std::env::args().collect();
+
+    let c = cow::Cow::new(args[1..].join(" "));
+
+    println!("{}", c)
+}