recursive search function written

.gitignore

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+/target
+/testing_grounds

Cargo.lock

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

Cargo.toml

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

src/main.rs

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+use std::io;
+
+fn recurse_through_c_files(dir: &str) -> io::Result<()> {
+    let dir = std::fs::read_dir(dir)?;
+
+    for file in dir {
+        let file = file?;
+ 
+        let file_path = file.path();
+
+        if file.path().is_dir() {
+            recurse_through_c_files(file_path.to_str()
+                     .expect("filepath should be converted to string slice"))?;
+        }
+
+        let ext = file_path.extension()
+            .and_then(|v| v.to_str())
+            .unwrap_or_else(|| "");
+
+        if ext != "c" {
+            continue;
+        }
+
+        println!("{:?}", file.path().with_extension("o").file_name().expect("files should have names"));
+        todo!()
+    }
+
+    Ok(())
+}
+
+fn main() {
+    recurse_through_c_files(".").unwrap_or_else(|e| {
+        panic!("error: could not recurse through directory: {e}");
+    });
+}