算数的加减乘除---（Java版）

注：这里我只是给了运行的代码，还需要自己去导包。

1.加法：

public class sum {
    public static void main(String[] args) {
        Scanner  s1 = new Scanner(System.in);
        System.out.println("请输入a的值：");
        int a = s1.nextInt();
        System.out.println("请输入b的值：");
        int b = s1.nextInt();
        System.out.printf("a + b = %d",a+b);
    }
}

运行结果：

2.减法：

public class sum {
    public static void main(String[] args) {
        Scanner  s1 = new Scanner(System.in);
        System.out.println("请输入a的值：");
        int a = s1.nextInt();
        System.out.println("请输入b的值：");
        int b = s1.nextInt();
        System.out.printf("a - b = %d",a-b);
    }
}

运行结果：

3.乘法：

public class sum {
    public static void main(String[] args) {
        Scanner  s1 = new Scanner(System.in);
        System.out.println("请输入a的值：");
        int a = s1.nextInt();
        System.out.println("请输入b的值：");
        int b = s1.nextInt();
        System.out.printf("a * b = %d",a*b);
    }
}

 运行结果：

4.除法：

public class sum {
    public static void main(String[] args) {
        Scanner  s1 = new Scanner(System.in);
        System.out.println("请输入a的值：");
        int a = s1.nextInt();
        System.out.println("请输入b的值：");
        int b = s1.nextInt();
        System.out.printf("a / b = %d",a/b);
    }
}

运行结果：