Question

用java编写一个程序计算长方形的面积和周长。长方形的宽和高要求从键盘输入。要可以运行的，拜托了

Answer 1

package 矩形CS;
import java.util.Scanner;
public class 矩形 {
public static void main(String[] args) {
System.out.println("输入矩形的长a=");
Scanner x=new Scanner(System.in);
double a=x.nextDouble();
System.out.println("输入矩形的宽b=");
Scanner y=new Scanner(System.in);
double b=y.nextDouble();
double C=2*(a+b);
double S=a*b;
System.out.println("C="+C);
System.out.println("S="+S);
}
}

Answer 2

package a1;
import java.util.Scanner;
public class Test1 {
public static float zhouchang(float x,float y){
return 2*(x+y);
}
public static float mianji(float x,float y) {
return x*y;
}
public static void main(String[] args) {
System.out.println("请输入宽度x和高度y");
Scanner scanner = new Scanner(System.in);
float x =Float.parseFloat(scanner.next());
float y = Float.parseFloat(scanner.next());
System.out.println("周长："+zhouchang(x, y)+"面积："+mianji(x, y));
}
}

追问

我运行了一下，这个有点儿错误，能不能改一下

追答

哪里错了？？