c++ 数组越界问题

表明不会进行越界检查，但是内存已经写乱

测试结果如下

This is sample[0]0
This is sample[1]1
This is sample[2]2
This is sample[3]3
This is sample[4]4
This is sample[5]5
This is sample[6]6
This is sample[7]7
This is sample[8]8
This is sample[9]9
This is sample[10]10
This is sample[11]-1078392176
This is sample[12]12832756
This is sample[13]-1078392088
This is sample[14]11611788
This is sample[15]11488416
This is sample[16]134514448
This is sample[17]-1078392088
This is sample[18]11611788
This is sample[19]1
This is sample[20]-1078392044