java实现简单计算器功能(java编写简易计算器初学者)
java实现计算器功能
写四个方法:加减乘除
利用循环+switch进行用户交互
传递需要操作的两个数
输出结果
public class Demo05 {
public static void main(String[] args) {
while (true) {
Scanner scanner = new Scanner(System.in);
System.out.println("请输入第一个数字:");
int a = scanner.nextInt();
System.out.println("要进行的运算是:");
String s = scanner.next();
System.out.println("请输入第二数");
int b = scanner.nextInt();
// scanner.close();
switch (s) {
case "+":
System.out.println("结果是:" + add(a, b));
break;
case "-":
System.out.println("结果是:" + reduce(a, b));
break;
case "*":
System.out.println("结果是:" + mul(a, b));
break;
case "/":
System.out.println("结果是:" + div(a, b));
break;
}
}
}
public static int add(int a,int b){
return a+b;
}
public static int reduce(int a,int b){
return a-b;
}
public static int mul(int a,int b){
return a*b;
}
public static int div(int a,int b){
return a/b;
}
}
标签:java,scanner,int,计算器,System,简单,println,public,out
来源: https://www.cnblogs.com/clh6425/p/15582840.html