C++容器陷阱 以及正确用法

容器未知大小，禁用char buff[100]  ; push_back进去 vector容器构造函数新数据指针替代旧数据指针，析构函数析构掉所有旧数据指针。

下面正确使用，以便以后用时翻看。      

       vector<char*> pch_new_vec;

string pch_new_split;
vector<string> pch_newstr_vec;  
vector<char*>::iterator iter_c; 
for (iter_c=pch_new_vec.begin();iter_c<pch_new_vec.end()-1;iter_c++ )
{
pch_new_split = *iter_c;
pch_new_split.erase(0, pch_new_split.find_first_not_of(" \t")); // 清空pch_new_split字符前面空格
pch_new_split.erase(pch_new_split.find_last_not_of(" \t") + 1); // 清空pch_new_split字符后面空格
pch_newstr_vec.push_back(pch_new_split);
}


for (int i = 0 ; i<pch_newstr_vec.size();++i)
{
char *buff= (char*)pch_newstr_vec[i].c_str(); // 关键
pch_new_vec.push_back(buff);
}