Function random 

pub fn random() -> Result<i32, String>

Generates a random i32 number.

Returns

• Ok(i32) if the random number generator is available.
• Err(String) if the generator has not been initialized.

Example

let result = random();
match result {
    Ok(num) => println!("Generated random number: {}", num),
    Err(err) => eprintln!("Error: {}", err),
}