c++ - 用于查找字符串 vector 中元素位置的函数出错 (c++)

Question

我有以下函数可以很好地用于查找字符串在字符串 vector 中的位置:

int FindIndexString(vector <string> *Names, string *name)
{
    auto it = find(Names->begin(), Names->end(), name->c_str());
    if (it == Names->end())
    {
         error("FindIndexString: %s not found",name->c_str());
    }else{
        auto index = distance(Names->begin(), it);
        return((int)index);
    }
}

我需要在提示“自动”说明符的 R 程序中使用此函数，并且我无法使用 C++11 进行编译。

我把函数改成了

int FindIndexString(vector <string> *Names, string *name)
 {
     vector<string>::iterator it;
     it = find(Names->begin(), Names->end(), name->c_str());

     int pos = (int)distance(Names->begin(), it);

     if(it==Names->end())
     {
          error("FindIndexString: %s not found",name->c_str());;
     }else{
         return(pos);
     }    
  }

但它不起作用，我收到以下错误

In function 'int FindIndexString(std::vector<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > > >*, std::string*)':
F_Utils.cpp:92: error: no matching function for call to 'find(__gnu_cxx::__normal_iterator<std::basic_string<char, std::char_traits<char>, std::allocator<char> >*, std::vector<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, __gnu_cxx::__normal_iterator<std::basic_string<char, std::char_traits<char>, std::allocator<char> >*, std::vector<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, const char*)'

有什么帮助吗？

Answer 1

您需要 #include <algorithm>对于 std::find