Java:编写简单的计算器(switch语句)
话不多说,代码献上:
package demopo1;
import java.util.Scanner;
public class javatest {
public static void main(String[] args) {
Scanner in = new Scanner(System.in);
System.out.println("请输入第一个数字:");
int firstNum = in.nextInt();
System.out.println("请输入算数运算符号:");
String s = in.next();
System.out.println("请输入第二个数字:");
int secondNum = in.nextInt();
switch(s){
case "+":
System.out.println(firstNum + "+" +secondNum+"="+(firstNum+secondNum));
break;
case "-":
System.out.println(firstNum+"-"+secondNum+"="+(firstNum-secondNum));
break;
case "*":
System.out.println(firstNum+"*"+secondNum+"="+(firstNum*secondNum));
break;
case "/":
System.out.println(firstNum+"/"+secondNum+"="+(firstNum/secondNum));
break;
default:
System.out.println("输入有误...."); } }
}
运行结果:
请输入第一个数字:
22
请输入算数运算符号:
*
请输入第二个数字:
6
22*6=132