From ebfe95e632a36e80ef10fdea8cd41295ed51b688 Mon Sep 17 00:00:00 2001
From: Your name <ninvoido.0@gmail.com>
Date: Wed, 25 Jan 2023 22:44:05 +0300
Subject: [PATCH 1/2] Add error handling

---
 src/main.rs | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/main.rs b/src/main.rs
index 9aefb5f..d51f76f 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -14,7 +14,11 @@ fn main_loop() {
     stdout().flush().unwrap();
     let mut input = String::new();
     while stdin().read_line(&mut input).unwrap() != 0 {
-        println!("{}", evalexpr::eval(&input.trim()).unwrap());
+        let result = evalexpr::eval(&input.trim());
+        match result {
+            Ok(succ_res) => println!("{}", succ_res),
+            Err(_) => println!("Invalid input")
+        }
         input.clear();
         print!(">>> ");
         stdout().flush().unwrap();

From 2481dfd3aa8cfab4dd5d7819bc0617f4a515ebf5 Mon Sep 17 00:00:00 2001
From: Ivan Bushchik <ivabus@ivabus.dev>
Date: Wed, 25 Jan 2023 22:49:48 +0300
Subject: [PATCH 2/2] Update error handling for a more beautiful look

---
 src/main.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/main.rs b/src/main.rs
index d51f76f..48c03bc 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -17,7 +17,7 @@ fn main_loop() {
         let result = evalexpr::eval(&input.trim());
         match result {
             Ok(succ_res) => println!("{}", succ_res),
-            Err(_) => println!("Invalid input")
+            Err(err) => println!("Error: {}", err)
         }
         input.clear();
         print!(">>> ");