package aaa;
import java.util.Scanner;
public class AK3 {
public static void main(String[] args) {
Scanner input =new Scanner(System.in);
System.out.println("请输入第一个操作数:");
double opp1 =input.nextDouble();
System.out.println("请输入第二个操作数");
if (input.hasNextDouble()==true);
System.out.println("请输入:1加法,2减法,3乘法,4除法");
int opp2 =input.nextInt();
int onn =input.nextInt();
switch (onn) {
case 1 :
System.out.println("计算结果:"+(opp1+opp2));
break;
case 2 :
System.out.println("计算结果:"+(opp1-opp2));
break;
case 3 :
System.out.println("计算结果:"+(opp1*opp2));
break;
case 4 :
System.out.println("计算结果:"+(opp1/opp2));
break;
default:
System.out.println("请输入正确的数字!");
break;
}
}
}
import java.util.Scanner;
public class AK3 {
public static void main(String[] args) {
Scanner input =new Scanner(System.in);
System.out.println("请输入第一个操作数:");
double opp1 =input.nextDouble();
System.out.println("请输入第二个操作数");
if (input.hasNextDouble()==true);
System.out.println("请输入:1加法,2减法,3乘法,4除法");
int opp2 =input.nextInt();
int onn =input.nextInt();
switch (onn) {
case 1 :
System.out.println("计算结果:"+(opp1+opp2));
break;
case 2 :
System.out.println("计算结果:"+(opp1-opp2));
break;
case 3 :
System.out.println("计算结果:"+(opp1*opp2));
break;
case 4 :
System.out.println("计算结果:"+(opp1/opp2));
break;
default:
System.out.println("请输入正确的数字!");
break;
}
}
}