在字符串向量中插入一个字符串

问题描述：

这是我正在尝试编译的代码。我收到此错误：

没有匹配函数来调用'std :: vector< std :: basic_string< char> > :: insert（int，const char [2]）'

此行上

dataDictionaryEntryFieldsId.insert（2，B）;

我做错了什么？

Here is the code I'm trying to compile. I get this error:
no matching function for call to ‘std::vector<std::basic_string<char> >::insert(int, const char [2])’

on this line

dataDictionaryEntryFieldsId.insert(2,"B");

What am I doing wrong?

#include "main.hpp"
#include "vector"

using namespace std;

int test(void)
{

vector<string>dataDictionaryEntryFieldsId;

dataDictionaryEntryFieldsId.push_back("A");
dataDictionaryEntryFieldsId.push_back("C");

dataDictionaryEntryFieldsId.insert(2,"B");
}

我的尝试：

我尝试使用字符串变量而不是B并且它不起作用

What I have tried:

I tried using a string variable instead of "B" and it didn't work either

答

正如 enhzflep所建议的，这是第一个不适合的参数。

尝试

As suggested by enhzflep, it is the first parameter that doesn't fit.
Try

#include <vector>
#include <string>
#include <iostream>

using namespace std;

int main()
{
  vector< string > v;
  v.push_back("A");
  v.push_back("C");

  vector< string >::iterator it = v.begin() + 1;
  v.insert( it, "B");

  for (size_t n=0; n<v.size(); ++n)
    cout << v[n] << endl;

}

或者，使用 C ++ 11

or, using C++11

#include <vector>
#include <string>
#include <iostream>

using namespace std;

int main()
{
  vector< string > v;

  v.push_back("A");
  v.push_back("C");

  auto it = v.begin() + 1;
  v.insert( it, "B");

  for (const auto & x : v)
    cout << x << endl;
}

我发现擦除工作

I found that erase works

it=v.begin() + 1;
   v.erase(it);

在字符串向量中插入一个字符串

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