package operator;
public class Demo04 {
public static void main(String[] args) {
text();
text2();
}
public static void text() {
int a = 10;
int b = 20;
a += b;//20
System.out.println(a);//30
System.out.println(a+b);//50
System.out.println(""+a+b);//3020
System.out.println(a+b+"");//50
}
public static void text2(){
//x ? y : z
int score = 90;
String type = score <60?"不及格":"及格";
System.out.println(type);//及格
}
}
/**
* 优先级
* ()
* 一元运算符
* 加减乘除
* 位于、相等
*/