用java写一"计算器",可以进行四则运算
时间: 2023-05-20 16:01:18 浏览: 59
好的,以下是一个简单的Java计算器程序,可以进行四则运算:
import java.util.Scanner;
public class Calculator {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
System.out.println("请输入第一个数字:");
double num1 = scanner.nextDouble();
System.out.println("请输入运算符号(+、-、*、/):");
char operator = scanner.next().charAt(0);
System.out.println("请输入第二个数字:");
double num2 = scanner.nextDouble();
double result = 0.0;
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("输入的运算符号不正确!");
return;
}
System.out.println("计算结果为:" + result);
}
}