public class Main {
public static void main(String[] args) {
// TODO Auto-generated method stub
int a =3,b;
b=a++;//先赋值给B,再进行a++运算
System.out.println("a="+a+",b="+b);
}
}
输出:a=4,b=3
[java] view plain copy
public class Main {
public static void main(String[] args) {
// TODO Auto-generated method stub
int a =3,b;
b=++a;//先进行a++运算,再赋值给b
System.out.println("a="+a+",b="+b);
}
}
输出:a=4,b=4
[java] view plain copy
public class Demo {
public static void main(String args[]){
int x=4270;
x=x/1000*1000;//x为int型数据类型,所以在进行运算后也是int型数据。
System.out.println(x);
}
}
输出:4000
[java] view plain copy
public class Demo1 {
public static void main(String[] args) {
// TODO Auto-generated method stub
System.out.println(5%1);
System.out.println(1%5);
System.out.println(2%5);
System.out.println(3%5);
System.out.println(4%5);
System.out.println(5%5);
System.out.println(8%-5);
System.out.println(-5%9);
System.out.println(-18%7);
/*
* 左边小于右边结果是左边,
* 左边等于右边结果是0
* 右边等于1结果是0
*
*/
/*
*
* 对于出现负数的情况 看%百分号左边的数字,左边是负数
* 结果就是负数,左边是正数,结果就是正数,运算方法不变
*/
}
}
输出:
0
1
2
3
4
0
3
-5
-4
[java] view plain copy
public class Demo2 {
public static void main(String[] args){
System.out.println("hello word");
System.out.println("\"hello word\"");//输出带引号的hello word
System.out.println("hello \n word");
System.out.println("hello\tword");
System.out.println("hello\bword");
/*
* 转义字符:通过 \ 反斜杠来转变后面的字母或者符号的含义
* \n:换行
* \b:退格
* \r:回车符号
* \t:水平跳格符,tab键
*/
}
}
输出:
hello word
"hello word"
hello
word
hello word
helloword |
|