diff --git a/Cargo.toml b/Cargo.toml
index 17fbad1..4f0dedb 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -16,3 +16,6 @@ notify-debouncer-mini = "0.2.1"
 ron = "0.8.0"
 serde = { version = "1.0.144", features = ["derive"] }
 termion = "1.5.6"
+
+[profile.release]
+lto = true
diff --git a/example/simple/main.c b/example/simple/main.c
new file mode 100644
index 0000000..a616ec4
--- /dev/null
+++ b/example/simple/main.c
@@ -0,0 +1,15 @@
+#include <stdio.h>
+#include "../../test.h"
+
+int main() {
+	int a;
+	printf("hello, world!! %d\n", a);
+}
+
+void test_it_works() {
+	assert_eq_int(2 + 2, 4);
+}
+
+void test_it_fails() {
+	assert_eq_int(2 + 2, 5);
+}
diff --git a/src/check.rs b/src/check.rs
index ea20cb5..9e6044a 100644
--- a/src/check.rs
+++ b/src/check.rs
@@ -1,3 +1,3 @@
-pub fn main(_file: String) {
+pub fn main(_files: Vec<String>) {
     todo!()
 }
diff --git a/src/main.rs b/src/main.rs
index c3514ba..6ba98e3 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -22,16 +22,13 @@ pub enum Commands {
     /// Checks a source file for conformance with piscine limitations.
     check {
         /// File to check.
-        /// Supports globing
-        #[clap(default_value_t = String::from("*"))]
-        file: String,
+        files: Vec<String>,
     },
 
     /// Runs a file
     run {
-        /// File to run.
-        #[clap(default_value_t = String::from("./main.c"))]
-        file: String,
+        /// Files to run.
+        files: Vec<String>,
     },
 
     /// Runs tests contained within a particular test file or
@@ -40,9 +37,8 @@ pub enum Commands {
         #[clap(short, long)]
         capture: bool,
 
-        /// File to run tests from.
-        #[clap(default_value_t = String::from("./test.c"))]
-        file: String,
+        /// Files to run tests from.
+        files: Vec<String>,
 
         /// Specific test to run.
         test: Option<String>,
@@ -50,9 +46,8 @@ pub enum Commands {
 
     /// Watches changes to source files and re run them
     watch {
-        /// File to run.
-        #[clap(default_value_t = String::from("./main.c"))]
-        file: String,
+        /// Files to run.
+        files: Vec<String>,
     },
 }
 
@@ -60,15 +55,15 @@ fn main() {
     let args: Arguments = Parser::parse();
 
     match args.command {
-        Commands::check { file } => check::main(file),
-        Commands::run { file } => {
-            run::main(file);
+        Commands::check { files } => check::main(files),
+        Commands::run { files } => {
+            run::main(files);
         }
         Commands::test {
             capture,
-            file,
+            files,
             test,
-        } => test::main(capture, file, test),
-        Commands::watch { file } => watch::main(file),
+        } => test::main(capture, files, test),
+        Commands::watch { files } => watch::main(files),
     }
 }
diff --git a/src/run.rs b/src/run.rs
index 5d8685a..647a11a 100644
--- a/src/run.rs
+++ b/src/run.rs
@@ -3,8 +3,8 @@ use crate::{
     utils::{log_failure, log_success},
 };
 
-pub fn main(file: String) -> Option<()> {
-    let source_file = file.into();
+pub fn main(files: Vec<String>) -> Option<()> {
+    let source_file = files.into_iter().map(|f| f.into()).collect();
     let compiled = CompileTask::new(source_file)
         .with_flag("-Wall")
         .with_flag("-Wextra")
diff --git a/src/tasks.rs b/src/tasks.rs
index e86e451..05120d8 100644
--- a/src/tasks.rs
+++ b/src/tasks.rs
@@ -4,10 +4,12 @@ use std::{
     process::{Command, ExitStatus},
 };
 
-use crate::utils::{log_command_run, log_separator, tmp_file_path, Apply};
+use crate::utils::{
+    log_command_run, log_separator, log_separator_bottom, log_separator_top, tmp_file_path, Apply,
+};
 
 pub struct CompileTask {
-    file: PathBuf,
+    files: Vec<PathBuf>,
     addition: Vec<String>,
     flags: Vec<String>,
 }
@@ -15,9 +17,9 @@ pub struct CompileTask {
 // TODO: split compile & compile raw
 
 impl CompileTask {
-    pub fn new(file: PathBuf) -> Self {
+    pub fn new(files: Vec<PathBuf>) -> Self {
         Self {
-            file,
+            files,
             addition: vec![],
             flags: vec![],
         }
@@ -35,7 +37,8 @@ impl CompileTask {
 
     pub fn run(self) -> Result<PathBuf, ExitStatus> {
         let proc_source = self.gen_source();
-        let sources = vec![proc_source, self.file.clone()];
+        let mut sources = self.files.clone();
+        sources.push(proc_source);
         self.compile(sources)
     }
 
@@ -56,9 +59,9 @@ impl CompileTask {
             .args(self.flags.clone())
             .args(sources.iter().map(|s| s.to_str().unwrap()));
         log_command_run(&command);
-        log_separator();
+        log_separator_top();
         let status = command.status().unwrap();
-        log_separator();
+        log_separator_bottom();
         status.success().then_some(output_path).ok_or(status)
     }
 }
@@ -75,9 +78,9 @@ impl RunTask {
     pub fn run(self) -> Result<(), ExitStatus> {
         let mut command = Command::new(self.file);
         log_command_run(&command);
-        log_separator();
+        log_separator_top();
         let status = command.status().unwrap();
-        log_separator();
+        log_separator_bottom();
         if status.success() {
             Ok(())
         } else {
diff --git a/src/test.rs b/src/test.rs
index 5b4da87..523b802 100644
--- a/src/test.rs
+++ b/src/test.rs
@@ -1,4 +1,4 @@
-pub fn main(_capture: bool, _file: String, _test: Option<String>) {
+pub fn main(_capture: bool, _files: Vec<String>, _test: Option<String>) {
     let content = todo!();
     let tests = find_tests(content);
     for test in tests {
diff --git a/src/utils.rs b/src/utils.rs
index b59b314..ecea085 100644
--- a/src/utils.rs
+++ b/src/utils.rs
@@ -42,6 +42,14 @@ pub fn log_separator() {
     println!("────────────────")
 }
 
+pub fn log_separator_top() {
+    println!("───────────────┐")
+}
+
+pub fn log_separator_bottom() {
+    println!("───────────────┘")
+}
+
 pub fn log_failure(text: &str) {
     log_pi_prefix();
     let text = format!("{}{text}{}", color::Fg(color::Red), color::Fg(color::Reset));
diff --git a/src/watch.rs b/src/watch.rs
index b62d839..cf1ad14 100644
--- a/src/watch.rs
+++ b/src/watch.rs
@@ -1,6 +1,5 @@
 use std::{path::Path, sync::mpsc, time::Duration};
 
-use notify::{Error, Event, Watcher};
 use notify_debouncer_mini::new_debouncer;
 
 use crate::{
@@ -9,16 +8,16 @@ use crate::{
 };
 
 pub struct Repeater {
-    file: String,
+    files: Vec<String>,
 }
 
 impl Repeater {
-    pub fn new(file: String) -> Self {
-        Self { file }
+    pub fn new(files: Vec<String>) -> Self {
+        Self { files }
     }
 
     pub fn repeat(&self) -> Option<()> {
-        let source = CompileTask::new(self.file.clone().into())
+        let binary = CompileTask::new(self.files.clone().into_iter().map(|f| f.into()).collect())
             .run()
             .map(Option::from)
             .unwrap_or_else(|_| {
@@ -27,7 +26,7 @@ impl Repeater {
             })?;
 
         log_success("compilation successful");
-        RunTask::new(source)
+        RunTask::new(binary)
             .run()
             .map(Option::from)
             .unwrap_or_else(|_| {
@@ -41,18 +40,20 @@ impl Repeater {
     }
 }
 
-pub fn main(file: String) {
-    log_process(&format!("watching file '{file}'"));
-    let repeater = Repeater::new(file.clone());
+pub fn main(files: Vec<String>) {
+    log_process(&format!("watching files '{files:?}'"));
+    let repeater = Repeater::new(files.clone());
     repeater.repeat();
 
     let (send, rec) = mpsc::channel();
     let mut debouncer = new_debouncer(Duration::from_millis(100), None, send).unwrap();
 
-    debouncer
-        .watcher()
-        .watch(Path::new(&file), notify::RecursiveMode::Recursive)
-        .unwrap();
+    for file in files {
+        debouncer
+            .watcher()
+            .watch(Path::new(&file), notify::RecursiveMode::Recursive)
+            .unwrap();
+    }
 
     for events in rec {
         for _ in events.unwrap() {
diff --git a/test.h b/test.h
new file mode 100644
index 0000000..b969cee
--- /dev/null
+++ b/test.h
@@ -0,0 +1,9 @@
+#include <stdlib.h>
+#include <stdio.h>
+
+void assert_eq_int(int left, int right) {
+	if (left != right) {
+		printf("assertion failed\n'%i' != '%i'\n", left, right);
+		exit(1);
+	}
+}
\ No newline at end of file