Updated 'src/error_handling/result.md'.

Author: gnu4cn

projects/result_demo/Cargo.toml

@@ -0,0 +1,6 @@
+[package]
+name = "result_demo"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]

projects/result_demo/src/main.rs

@@ -0,0 +1,5 @@
+use std::fs::File;
+
+fn main () {
+    let greeting_file = File::open("hello.txt")?;
+}