day7

package operator;

public class Demo01 {
    public static void main(String[] args) {
        //二元运算符
        //Ctrl+D:复制当前行到下一列
        int a = 10;
        int b = 20;
        int c = 25;
        int d = 25;

        System.out.println(a+b);
        System.out.println(a-b);
        System.out.println(a*b);
        System.out.println(a/(double)b);
    }
}

package operator;

public class Demo02 {
    public static void main(String[] args) {
        long a = 123123123123L;
        int b = 123;
        short c = 10;
        byte d = 8;

        System.out.println(a+b+c+d); //Long
        System.out.println(b+c+d); //Int
        System.out.println(c+d); //Int
    }
}

package operator;

public class Demo03 {
    public static void main(String[] args) {
        //关系运算符返回的结果：正确，错误   布尔值
        //if
        int a =10;
        int b =20;
        int c =21;

        System.out.println(c%a);//c / a   21 / 10 = 2...1

        System.out.println(a>b);
        System.out.println(a<b);
        System.out.println(a==b);
        System.out.println(a!=b);
    }
}

标签：10,int,day7,System,println,public,out
来源： https://www.cnblogs.com/cya520/p/15972126.html