题解 | #实现四舍五入#

public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        double num = scanner.nextDouble();
        if(num >= 0){
            System.out.println((int)(num + 0.5));
        } else {
            System.out.println((int)(num - 0.5));
        } 
    }
}