小编Gur*_*ddy的帖子

我在for循环中声明了一个数组，并尝试打印其基地址。

#include<stdio.h>

int main(){
  int n=16;
  for(int i=1;i<=n;i++){
    int a[i];
    int b[16];
    int c[n];
    printf("%p %p %p\n",(void *)a,(void *)b,(void *)c);
  }
  return 0;
}

输出如下：

0x7fffe6191740 0x7fffe6191770 0x7fffe6191700
0x7fffe6191740 0x7fffe6191770 0x7fffe6191700
0x7fffe6191740 0x7fffe6191770 0x7fffe6191700
0x7fffe6191740 0x7fffe6191770 0x7fffe6191700
0x7fffe6191730 0x7fffe6191770 0x7fffe61916f0
0x7fffe6191730 0x7fffe6191770 0x7fffe61916f0
0x7fffe6191730 0x7fffe6191770 0x7fffe61916f0
0x7fffe6191730 0x7fffe6191770 0x7fffe61916f0
0x7fffe6191720 0x7fffe6191770 0x7fffe61916e0
0x7fffe6191720 0x7fffe6191770 0x7fffe61916e0
0x7fffe6191720 0x7fffe6191770 0x7fffe61916e0
0x7fffe6191720 0x7fffe6191770 0x7fffe61916e0
0x7fffe6191710 0x7fffe6191770 0x7fffe61916d0
0x7fffe6191710 0x7fffe6191770 0x7fffe61916d0
0x7fffe6191710 0x7fffe6191770 0x7fffe61916d0
0x7fffe6191710 0x7fffe6191770 0x7fffe61916d0

为什么数组的基地址每次都会更改？是否为每次迭代分配内存。如果是这样，为什么地址在4次迭代中没有变化？

请说明之间的区别a，b以及c …

这是html代码：

< input class="form-control input-lg input auto-complete" id="ymMsgInput" type="text" placeholder="Type your message ..." autocomplete="off" >

代码：

i = s.find_element_by_id("ymMsgInput");

Python - Selenium Chrome webdriver 错误：

Traceback (most recent call last):
  File "<pyshell#19>", line 1, in <module>
    i = s.find_element_by_id("ymMsgInput");
  File "C:\Users\vishn\AppData\Local\Programs\Python\Python36-32\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 351, in find_element_by_id
    return self.find_element(by=By.ID, value=id_)
  File "C:\Users\vishn\AppData\Local\Programs\Python\Python36-32\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 955, in find_element
    'value': value})['value']
  File "C:\Users\vishn\AppData\Local\Programs\Python\Python36-32\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 312, in execute
    self.error_handler.check_response(response)
  File "C:\Users\vishn\AppData\Local\Programs\Python\Python36-32\lib\site-packages\selenium\webdriver\remote\errorhandler.py", line 242, in check_response
    raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.WebDriverException: Message: chrome not reachable
  (Session info: …