You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: main.rs
    path of file: ./repos/rust-farm/handson/manhattan/src
    
    the code of the file until where you have to start completion: use std::io;

fn main() {
    let letter_rows=vec![
        " #  ##   ## ##  ### ###  ## # # ###  ## # # #   # # ###  #  ##   #  ##   ## ### # # # # # # # # # # ### ###",
        "# # # # #   # # #   #   #   # #  #    # # # #   ### # # # # # # # # # # #    #  # # # # # # # # # #   #   #",
        "### ##  #   # # ##  ##  # # ###  #    # ##  #   ### # # # # ##  # # ##   #   #  # # # # ###  #   #   #   ##",
        "# # # # #   # # #   #   # # # #  #  # # # # #   # # # # # # #    ## # #   #  #  # # # # ### # #  #  #      ",
        "# # ##   ## ##  ### #    ## # # ###  #  # # ### # # # #  #  #     # # # ##   #  ###  #  # # # #  #  ###  # "
    ];

    println!("Bir meti
    
fn main() {
    let letter_rows=vec![
        " #  ##   ## ##  ### ###  ## # # ###  ## # # #   # # ###  #  ##   #  ##   ## ### # # # # # # # # # # ### ###",
        "# # # # #   # # #   #   #   # #  #    # # # #   ### # # # # # # # # # # #    #  # # # # # # # # # #   #   #",
        "### ##  #   # # ##  ##  # # ###  #    # ##  #   ### # # # # ##  # # ##   #   #  # # # # ###  #   #   #   ##",
        "# # # # #   # # #   #   # # # #  #  # # # # #   # # # # # # #    ## # #   #  #  # # # # ### # #  #  #      ",
        "# # ##   ## ##  ### #    ## # # ###  #  # # ### # # # #  #  #     # # # ##   #  ###  #  # # # #  #  ###  # "
    ];

    println!("Bir metin girin ? ");

    let mut input_line = String::new();
    io::stdin().read_line(&mut input_line).unwrap();
    let t = input_line.trim_matches('\n').to_uppercase();
    let a_value='A' as u8;
    let z_value='Z' as u8;

    for r in 0..5 {
        for i in 0..t.len() {
            let b_value = t.as_bytes()[i];
            //println!("{}",b_value);
            if b_value >= a_value && b_value <= z_value {
                let start = ((b_value - a_value) * 4) as usize;
                let end = start + 4;

                for j in start..end {
                    let sharp = letter_rows[r].as_bytes()[j];
                    print!("{}", sharp as char);
                }
            }
        }
        println!();
    }
}