I don't like learning Rust, continue in c++ for now -- advent_of_code

advent_of_code/d4/Cargo.lock

@@ -5,3 +5,12 @@ version = 3
 [[package]]
 name = "d4"
 version = "0.1.0"
+dependencies = [
+ "text_io",
+]
+
+[[package]]
+name = "text_io"
+version = "0.1.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ee74b5019b48991b09803402aaf9e65a053b3993fe9d9c475ab67a395358ba76"

advent_of_code/d4/Cargo.toml

@@ -6,3 +6,4 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
+text_io = "0.1.9"

advent_of_code/d4/src/main.rs

@@ -3,6 +3,8 @@ use std::path::Path;
 use std::fs::File;
 use std::collections::HashMap;
 
+use text_io::scan;
+
 
 // -- PART 1 --
 
@@ -12,6 +14,7 @@ use std::collections::HashMap;
 // Goal is to find the bingo card that has bingo first and calculate some metrics of it
 // Metrics are the last called number multiplied by sum of all numbers that were not needed for bingo
 
+#[derive(Debug,PartialEq)]
 struct Card {
     numbers : HashMap<u64, (usize, usize)>,
     opens : [[bool; 5]; 5],
@@ -78,8 +81,8 @@ fn main(){
         Ok(file) => file,
     };
 
-    let lines = io::BufReader::new(file).lines();
+    let mut lines = io::BufReader::new(file).lines();
-    let mut numbers = Vec::<u8>::new();
+    let mut numbers = Vec::<u32>::new();
     let mut bingo_cards = Vec::<Card>::new();
 
     // let mut c = Card::new();
@@ -95,4 +98,36 @@ fn main(){
     // assert_eq!(c.call(4), None);
     // assert_eq!(c.call(5), Some(0));
 
+    let first_line = lines.nth(0).unwrap().unwrap();
+    let mut acc: u32 = 0;
+    for c in first_line.chars() {
+        if c != ',' && c != '\n' {
+            acc *= 10;
+            acc += c.to_digit(10).unwrap();
+        } else{
+            numbers.push(acc);
+            acc = 0;
+        }
+    }
+
+    let mut n_start = 2;
+    let mut bingo_start_line = lines.nth(n_start);
+
+    while !bingo_start_line.is_none() {
+        let card = Card::new();
+
+        for i in 0..5 {
+            let cur_line = lines.nth(n_start + i).unwrap().unwrap();
+            let a: i32;
+            let b: i32;
+            let c: i32;
+            let d: i32;
+            let e: i32;
+            scan!(cur_line.bytes() => "{} {} {} {} {}", a, b, c, d, e);
+            println!("{} {} {} {} {}", a, b, c, d, e);
+        }
+
+        n_start += 6;
+        bingo_start_line = lines.nth(n_start);
+    }
 }