c++ - vector的迭代器能不能用for循环访问？？

Answer 1

If your count is equal to xxx.size(), there is no big difference and it is not unsafe. But the question is why would you do this? Either just use xxx.at(i) to access without iterator; or just use iterator to access

Answer 2

Isn’t it better to use it != xxx.end() to control it directly? There is no need to define a new variable count to operate

Answer 3

How about a range for loop or iterator?