diff --git a/solutions/24_file_io/file_io2.rs b/solutions/24_file_io/file_io2.rs
index ba6aff20..5e41b835 100644
--- a/solutions/24_file_io/file_io2.rs
+++ b/solutions/24_file_io/file_io2.rs
@@ -1,4 +1,3 @@
-
 use std::fs;
 use std::io::{BufRead, BufReader, BufWriter, Write};
 use std::path::Path;
@@ -6,13 +5,11 @@ use std::path::Path;
 const TEST_FILE_NAME: &str = "MultiLineTextFile.txt";
 
 fn main() {
-
     create_required_files();
     let input_file = fs::File::open(TEST_FILE_NAME);
 
     if input_file.is_err() {
-        eprintln!("Input file open error : {}", input_file.as_ref().unwrap_err());
-        assert!(false);
+        panic!("Input file open error");
     }
 
     let buffered_input_file = BufReader::new(input_file.unwrap());
@@ -20,32 +17,34 @@ fn main() {
     let output_file = fs::File::create("MultiLineOutputFile.txt");
 
     if output_file.is_err() {
-        eprintln!("Output file open error : {}", output_file.as_ref().unwrap_err());
-        assert!(false);
+        eprintln!(
+            "Output file open error : {}",
+            output_file.as_ref().unwrap_err()
+        );
+        panic!("Output file open error");
     }
     let mut buffered_file_writer = BufWriter::new(output_file.ok().unwrap());
 
     let mut line_number = 1;
     let mut lines = buffered_input_file.lines();
-    while let Some(line) = lines.next() {
+
+    for line in lines {
         if let Ok(line) = line {
-            let write_result = buffered_file_writer.write(format!("Line {} : {}\n", line_number, line).as_bytes());
+            let write_result =buffered_file_writer.write(format!("Line {} : {}\n", line_number, line).as_bytes());
             if write_result.is_err() {
                 eprintln!("Write result error: {}", write_result.unwrap_err());
                 break;
             }
             line_number += 1;
-        }else {
-            eprintln!("Write line error : {}", line_number);
-            assert!(false);
+        } else {
+            panic!("Write line error");
         }
-
     }
 
     println!("{} : lines processed", line_number - 1);
 }
 
-fn create_required_files(){
+fn create_required_files() {
     let file_path = Path::new(TEST_FILE_NAME);
 
     if !file_path.exists() {
@@ -55,5 +54,4 @@ fn create_required_files(){
         fs::write(file_path, text).unwrap();
         println!("File created.");
     }
-
-}
\ No newline at end of file
+}