Rust program to write text into the file

Rust | File I/O Example: Write a program to write text into the file.
Submitted by Nidhi, on October 30, 2021

Problem Solution:

In this program, we will create a file and write text into a file using the write_all() method and print an appropriate message.

Program/Source Code:

The source code to write text into the file is given below. The given program is compiled and executed on UBUNTU 18.04 successfully.

// Rust program to write text into file

use std::io::Write;

fn main() {
   let mut fileRef = std::fs::File::create("sample.txt").expect("create failed");
   
   fileRef.write_all("Hello World\n".as_bytes()).expect("write failed");
   fileRef.write_all("Hello India\n".as_bytes()).expect("write failed");
   
   println!("Text written into file successfully");
}

Output:

$ rustc main.rs

$ ./main
Text written into file successfully

$ cat sample.txt 
Hello World
Hello India

Explanation:

Here, we created a text file "sample.txt" using File::create() function. Then we wrote text data into the file using the write_all() method and printed the appropriate message.