2022 - Day 1 part 1 - rust

2022/1/1.rs

@@ -0,0 +1,15 @@
+use std::io::{BufRead, BufReader};
+use std::fs::File;
+
+fn main (){
+    let filename = "./input_example.txt";
+    let file = BufReader::new(File::open(filename).expect("Unable to open file"));
+    let mut calories  = 0;
+
+    for line in file.lines() {        
+        let snack_calories : i32 = line.trim().parse().unwrap();
+        calories += snack_calories;
+    }
+
+    println!("Total lines are: {}", calories);
+}