Question

用javaFX编写一个简单的计算器

Answer 1

public static void main(String[] args) {
System.out.println("请输入第一个数：");
Scanner scanner1 = new Scanner(System.in);
double input1 = Double.parseDouble(scanner1.nextLine());

System.out.println("请输入符号：");
Scanner scanner3 = new Scanner(System.in);
String method = scanner3.nextLine();

System.out.println("请输入第二个数：");
Scanner scanner2 = new Scanner(System.in);
double input2 = Double.parseDouble(scanner2.nextLine());

double result = 0;
if (method.equals("+")) {
result = input1 + input2;
System.out.println("运行结果为：");
System.out.print(result);
}
if (method.equals("-")) {
result = input1 - input2;
System.out.println("运行结果为：");
System.out.print(result);
}
if (method.equals("*")) {
result = input1 * input2;
System.out.println("运行结果为：");
System.out.print(result);
}
if (method.equals("/")) {
result = input1 / input2;
System.out.println("运行结果为：");
System.out.print(result);
} else {
System.out.println("无此运算符");
}
}