Java简易计算器
- 思路：
- 利用循环使程序一直运行
- Scanner接受来自用户的数据
- 编写加减乘除四个方法
- 使用switch判断用户输入的符号使用对应的加减乘除方法
public class Counter {
public static void main(String[] args) {
//true为正确令程序一直运行
while (true){
Scanner scanner = new Scanner(System.in);
double a = scanner.nextInt();
String s = scanner.next();
double b = scanner.nextInt();
switch (s){
case "+" :
double add = add(a, b);
System.out.println(add);
break;
case "-":
double subtraction = subtraction(a, b);
System.out.println(subtraction);
break;
case "*":
double multiplication = multiplication(a,b);
System.out.println(multiplication);
break;
case "/":
double division = division(a, b);
System.out.println(division);
break;
}
}
}
public static double add (double a,double b){
return a+b;
}
public static double subtraction (double a,double b){
return a-b;
}
public static double multiplication (double a,double b){
return a*b;
}
public static double division (double a,double b){
return a/b;
}
}