Function main

code/chapter04/rec_mc1.rs:28–34

()

}

fn main() {
    // cashes 保存各种面额的纸币
    let cashes = [1,5,10,20,50];
    let amount = 31u32;
    let cashes_num = rec_mc1(&cashes, amount);
    println!("need refund {cashes_num} cashes");
}