fn main() {
    let _s = 5;
    let _m = 10;

    let _ggt = 0;
    let mut fertig = false;

    let _x = 0;
    let _y = 0;
    let _rest = 0;


    while !fertig {

    let _x = _m - _s;
    let rest = _x;


    if rest == 0 {
        let _ggt = _x;
        fertig = true;
    }
    println!("{}",_ggt);



}
}