VIP25/01-JavaSe/day02/Test09Ex.java.bak

class Test09Ex 
{
	public static void main(String[] args) 
	{	/*
		int i1 = 10;
        int i2 = 20;
        int i = i1++;
        System.out.print("i="+i); // 10
        System.out.println("i1="+i1);// 11
        i = ++i1;
        System.out.print("i="+i);// 12 
        System.out.println("i1="+i1);// 12 
        i = i2--;
        System.out.print("i="+i);// 20
        System.out.println("i2="+i2);// 19
        i = --i2;
        System.out.print("i="+i);// 18
        System.out.println("i2="+i2);// 18

		//面试题
		byte bb1 = 127;

		//bb1+1; //编译报错
		bb1++; // 原理 强制转换 
		// 0000 0000 0111 1111;
		//           1000 0000; //byte

		System.out.println("bb1 = " + bb1);//-128 = 1000 0000

		int i = 1; //4
			//  1   +  3  * 3 
		int j = i++ + ++i * i++;
		System.out.println("j = " + j); // 10

	}
}