做一个简易计算器java
时间: 2024-05-28 22:02:45 浏览: 23
import java.util.Scanner;
public class Calculator {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
double num1, num2, result;
char operator;
System.out.print("请输入第一个数字: ");
num1 = input.nextDouble();
System.out.print("请输入第二个数字: ");
num2 = input.nextDouble();
System.out.print("请选择运算符号 (+, -, *, /): ");
operator = input.next().charAt(0);
switch(operator) {
case '+':
result = num1 + num2;
System.out.println(num1 + " + " + num2 + " = " + result);
break;
case '-':
result = num1 - num2;
System.out.println(num1 + " - " + num2 + " = " + result);
break;
case '*':
result = num1 * num2;
System.out.println(num1 + " * " + num2 + " = " + result);
break;
case '/':
if(num2 == 0) {
System.out.println("除数不能为0");
} else {
result = num1 / num2;
System.out.println(num1 + " / " + num2 + " = " + result);
}
break;
default:
System.out.println("无效的运算符号");
}
}
}