Day36 Java方法和流程控制练习 计算器
package com.kognying.testquestion;import java.util.Scanner;//计算器
public class Cal2 {public static void main(String[] args) {Scanner scanner = new Scanner(System.in);System.out.println("请输入数字:");double a = scanner.nextDouble();System.out.println("请输入算法 + - * /");String m = scanner.next();System.out.println("请输入数字:");double b = scanner.nextDouble();switch (m){case "+":double sum1 = add(a,b);System.out.println(sum1);break;case "-":double sum2 = min(a,b);System.out.println(sum2);break;case "*":double sum3 = mul(a,b);System.out.println(sum3);break;case "/":double sum4 =div(a,b);System.out.println(sum4);break;default:System.out.println("运算符有误");}scanner.close();}public static double add(double a,double b){return a + b;}public static double min(double a,double b){return a - b;}public static double mul(double a,double b){return a * b;}public static double div(double a,double b){return a / b;}
}
