题目内容

以下语句正确的是＿＿＿。

A. x+1=5;
B. i++=1;
C. a++b=1;
D. x+=1;

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65/2的值是＿＿＿。

A. 0
B. 82
C. 3
D. 83

class Super { int i=0; public Super() { } public Super(String s) { i=1; }}class Demo extends Super{ public Demo(String s){ i=2; } public static void main(String[] args){ Demo d=new Demo("yes"); System.out.println(d.i); }}

A. yes
B. 1
C. 2
D. yes2

写出程序结果class Fu { int num=4; void show() { System.out.println("showFu"); } } class Zi extends Fu { int num=5; void show() { System.out.println("showZi"); } } class Demo { public static void main(String[] args) { Fu f=new Zi(); Zi z=new Zi(); System.out.println(f.num); System.out.println(z.num); f.show(); z.show(); } }

A. 45showFushowZi
B. 45showZishowZi
C. 44showFushowFu
D. 以上选项都不对

下面题目的运行结果是class Super { int i=0; public Super(String a) { System.out.println("A"); i=1; } public Super() { System.out.println("B"); i+=2; }}class Demo extends Super { public Demo(String a) { System.out.println("C"); i=5; } public static void main(String[] args) { int i=4; Super d = new Demo("A"); System.out.println(d.i); }}

A. C5
B. C7
C. BC5
D. BC4