53 lines
1.4 KiB
Rust
53 lines
1.4 KiB
Rust
use std::fs::File;
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use std::io::{self, BufRead};
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use std::path::Path;
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fn update_crt(cycle: i32, register: i32) {
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let m = cycle % 40;
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if m - register >= 0 && m - register <= 2 {
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print!("#");
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} else {
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print!(".");
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}
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if m == 0 {
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println!("");
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}
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}
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fn main() {
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let file_path = String::from("../aoc_10a/input");
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let mut cycle: i32 = 0;
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let mut register: i32 = 1;
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println!("In file {}", file_path);
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if let Ok(lines) = read_lines(file_path) {
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// Consumes the iterator, returns an (Optional) String
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for line in lines {
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if let Ok(ip) = line {
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let split: Vec<&str> = ip.split(" ").collect();
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let v = split.get(1).unwrap_or(&"").parse::<i32>();
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match v {
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Ok(n) => {
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cycle += 1;
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update_crt(cycle, register);
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cycle += 1;
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update_crt(cycle, register);
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register += n;
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},
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Err(_) => {
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cycle += 1;
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update_crt(cycle, register);
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},
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}
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}
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}
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}
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}
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fn read_lines<P>(filename: P) -> io::Result<io::Lines<io::BufReader<File>>>
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where P: AsRef<Path>, {
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let file = File::open(filename)?;
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Ok(io::BufReader::new(file).lines())
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}
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