I don't know how to get (_s) variable from other function. Maybe there is a way to reformat this script, so it could work or any other way.
fn shapes(data: usize) {
let romb = "hello";
let s_array = [romb];
let mut items_array = -1;
print!("{}", s_array[data]);
if items_array == _s { //<-------this _s variable is not in this function, so it doesn't work
} else {
println!("error");
}
for x in &s_array {
items_array = items_array + 1;
}
print!("{}", items_array);
}
fn main() {
let mut _s = String::new();
let _b1 = std::io::stdin()
.read_line(&mut _s)
.expect("failed to read line");
let mut _s = _s.trim_end();
let _s_int = _s.parse::<usize>().unwrap();
shapes(_s_int);
}