Insert a string in a string vector

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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?

C++

#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");
}

What I have tried:

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

Posted 30-Nov-16 16:02pm

JohnnyG62

Updated 1-Dec-16 8:47am

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Comments

enhzflep 30-Nov-16 23:17pm

The first parameter to insert is actually an iterator, rather than an integer. Therefore, if you'd like to add "B" after the other 2 elements, you can instead use:
dataDictionaryEntryFieldsId.insert(dataDictionaryEntryFieldsId.end(),"B");

[no name] 30-Nov-16 23:36pm

This would suffice an answer with a tiny bit of elaboration.

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CPallini · Accepted Answer · 2016-11-30T22:52:00

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

C++

#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;

}

or, using C++11

C++

#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;
}

JohnnyG62 · Accepted Answer · 2016-12-01T08:47:00

Solution 3

I found that erase works

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

Posted 1-Dec-16 8:47am