import java.util.Scanner; /写出一个程序,接受一个正浮点数值,输出该数值的近似整数值。如果小数点后数值大于等于5,向上取整;小于5,则向下取整/public class DSemo2 { public static void main(String[] args) { Scanner sc = new Scanner(System.in); double num = sc.nextDouble(); int i = (int) num; int result = num - i >= 0.5 ? i + 1 : i; ...