while循环加减乘除
时间: 2023-11-30 19:42:46 浏览: 33
以下是使用while循环实现加减乘除的Java代码示例:
```java
import java.util.Scanner;
public class Calculator {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
double num1, num2, result = 0;
char operator;
boolean flag = true;
while (flag) {
System.out.print("请输入第一个数字:");
num1 = input.nextDouble();
System.out.print("请输入运算符(+、-、*、/):");
operator = input.next().charAt(0);
System.out.print("请输入第二个数字:");
num2 = input.nextDouble();
switch (operator) {
case '+':
result = num1 + num2;
break;
case '-':
result = num1 - num2;
break;
case '*':
result = num1 * num2;
break;
case '/':
if (num2 == 0) {
System.out.println("除数不能为0,请重新输入!");
continue;
} else {
result = num1 / num2;
}
break;
default:
System.out.println("输入的运算符有误,请重新输入!");
continue;
}
System.out.println("计算结果为:" + result);
System.out.print("是否继续使用(y/n):");
char choice = input.next().charAt(0);
if (choice == 'n' || choice == 'N') {
System.out.println("感谢使用本次计算,欢迎下次使用,再见!");
flag = false;
}
}
}
}
```