用java写一个计算器的代码
时间: 2023-03-26 20:00:35 浏览: 62
很高兴回答你的问题。以下是一个简单的 Java 计算器代码:
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("请选择运算符(+, -, *, /): ");
char operator = scanner.next().charAt();
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("错误的运算符");
return;
}
System.out.println(num1 + " " + operator + " " + num2 + " = " + result);
}
}
希望这个代码对你有所帮助。