1 | initial version |
To change a text file to lowercase using Rust programming language, you can use the following code:
use std::fs::File;
use std::io::{BufRead, BufReader, Write};
fn main() {
let input_file = File::open("input.txt").unwrap();
let reader = BufReader::new(input_file);
let mut output_file = File::create("output.txt").unwrap();
for line_result in reader.lines() {
let line = line_result.unwrap();
let lowercase_line = line.to_lowercase();
writeln!(output_file, "{}", lowercase_line).unwrap();
}
}
This code opens an input file called "input.txt", reads its contents line by line, converts each line to lowercase using the to_lowercase()
method, and writes the lowercased lines to an output file called "output.txt".