Daily.rust day 2

fn main() {

    // This is an example of a line comment.

    // There are two slashes at the beginning of the line.

    // And nothing written after these will be read by the compiler.



    // println!("Hello, world!");



    // Run it. See? Now try deleting the two slashes, and run it again.



    /*

     * This is another type of comment, a block comment. In general,

     * line comments are the recommended comment style. But block comments

     * are extremely useful for temporarily disabling chunks of code.

     * /* Block comments can be /* nested, */ */ so it takes only a few

     * keystrokes to comment out everything in this main() function.

     * /*/*/* Try it yourself! */*/*/

     */



    /*

    Note: The previous column of `*` was entirely for style. There's

    no actual need for it.

    */



    // You can manipulate expressions more easily with block comments

    // than with line comments. Try deleting the comment delimiters

    // to change the result:

    let x = 5 + /* 90 + */ 5;

    println!("Is `x` 10 or 100? x = {}", x);

}