java小演算法02(實現加減乘除)
阿新 • • 發佈:2021-01-30
技術標籤:JAVA學習
程式碼示例
package com.hao.method; import java.util.Scanner; public class Demo09 { public static void main(String[] args) { double a, b; String str; Scanner scanner = new Scanner(System.in); System.out.println("請輸入算式(每輸入一個數字或字元後請按回車):"); a = scanner.nextDouble(); str=scanner.next(); b=scanner.nextDouble(); switch(str){ case "+": System.out.println(addition(a,b)); break; case"-": System.out.println(subtraction(a,b)); break; case"*": System.out.println(multiplication(a,b)); break; case"/": System.out.println(divisiond(a,b)); break; } } //加法 public static double addition(double a,double b){ return a+b; } //減法 public static double subtraction(double a,double b){ return a-b; } //乘法 public static double multiplication(double a,double b){ return a*b; } //除法 public static double divisiond(double a,double b){ return a/b; } }
輸出示例