用java 写个计算器app
时间: 2023-05-15 21:06:24 浏览: 72
好的,以下是一个简单的Java计算器app的代码:
import java.util.Scanner;
public class Calculator {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
System.out.print("请输入第一个数字: ");
double num1 = scanner.nextDouble();
System.out.print("请输入第二个数字: ");
double num2 = scanner.nextDouble();
System.out.print("请输入要执行的操作(+, -, *, /): ");
char operator = scanner.next().charAt(0);
double result;
switch(operator) {
case '+':
result = num1 + num2;
break;
case '-':
result = num1 - num2;
break;
case '*':
result = num1 * num2;
break;
case '/':
result = num1 / num2;
break;
default:
System.out.println("错误的操作符");
return;
}
System.out.println(num1 + " " + operator + " " + num2 + " = " + result);
}
}
希望这可以帮到你!