Trying to set numbers into word form

help
#1

I am a slight beginner in Rust and I am trying to set numbers 0-9 into word form. My code is erroring "and says expected type, found keyword static". I don't know what this means and I was hoping someone would help me understand and how to fix it.

pub fn run(){

fn run(n: usize) -> &static str {

 let  n:[i32; 10]=[0,1,2,3,4,5,6,7,8,9];

     println!("{zero} {one} {two} {three} {four} {five} {six} {seven} {eight} {nine}", n[0,1,2,3,4,5,6,7,8,9,10]);

}}
#2

There are a few issues in your code snippet:

  • println returns the unit (()) type, not &str
  • The bracket notation to access array elements by index only supports one element
  • String interpolation doesn't work like that in Rust, you are calling variables that are not defined anywhere in the code
2 Likes
#3

Is something like this what you were aiming for?

fn main() {
    for n in 0..10 {
        println!("{n}: {}", run(n));
    }
}

fn run(n: usize) -> &'static str {
    const WORDS: [&'static str; 10] = [
        "zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine",
    ];

    &WORDS[n]
}
1 Like
#4

Thanks for the help and tips

#5

its saying "there is no argument named 'n'"

#6

Did you copy 2e71828's code from the playground? His code snippet is clearly working.

#7

What version of the compiler are you using?

#8

I just updated to 1.59 but it still doesn't work

#9

I just found out it was a 0 width space unicode