Java四则运算源代码
时间: 2023-04-04 21:01:39 浏览: 76
我可以回答这个问题。Java四则运算的源代码可以通过编写一个简单的程序来实现。例如,可以使用Java的Scanner类来读取用户输入的数值,然后使用基本的算术运算符来执行加、减、乘、除等操作。以下是一个简单的Java程序示例,用于执行四则运算:
import java.util.Scanner;
public class Calculator {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
System.out.print("Enter first number: ");
double num1 = input.nextDouble();
System.out.print("Enter second number: ");
double num2 = input.nextDouble();
System.out.print("Enter an operator (+, -, *, /): ");
char operator = input.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("Error: Invalid operator");
return;
}
System.out.println(num1 + " " + operator + " " + num2 + " = " + result);
}
}