area2_1.java

area2_1.java

public class area2_1 {
public static void main (String[]arg){
java.util.Scanner scanner = new java.util.Scanner(System.in);

System.out.println("請輸入上底");
double updown = scanner.nextDouble();

        System.out.println("請輸入下底");
        double underdown = scanner.nextDouble();
  
        System.out.println("請輸入高");
        double height = scanner.nextDouble();        
          
        double area=(updown+underdown)*height/2;
        System.out.println("上底為"+updown+","+"下底為"+underdown+","+"高為"+height+",面積為"+area);      
}
}