copying c array of strings into vector of std::string

Question

I need to store elements of a c array of strings in a vector.

Basically I need to copy all the elements of a c array into a vector<std::string>.

#include<vector>
#include<conio.h>
#include<iostream>

using namespace std;

int main()
{
    char *a[3]={"field1","field2","field3"};

    //Some code here!!!!

    vector<std::string>::const_iterator it=fields.begin();
    for(;it!=fields.end();it++)
    {
        cout<<*it++<<endl;
    }   
    getch();
}

Could anybody help me out to store c array elements into a vector?

EDIT

this below code is dumping the core!!Pls help

int main()
{
    char *a[3]={"field1","field2","field3"};
    std::vector<std::string> fields(a, a + 3);

    vector<std::string>::const_iterator it=fields.begin();
    for(;it!=fields.end();it++)
    {
        cout<<*it++<<endl;
    }   
    getch();
}

You have it++ in two places. Remove ++ from one of them.

Dialecticus
– Dialecticus

2011-06-10 14:23:36 +00:00
Commented Jun 10, 2011 at 14:23 — Dialecticus
– Dialecticus, Commented Jun 10, 2011 at 14:23

Puppy · Accepted Answer · 2011-06-10 14:17:21Z

13

std::vector<std::string> fields(a, a + 3);

answered Jun 10, 2011 at 14:17

Puppy

147k40 gold badges271 silver badges481 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

Vijay Over a year ago

how can a c array which holds the pointers to the strings can be directly converted to std::string?

yasouser Over a year ago

See the third constructor listed here: cplusplus.com/reference/stl/vector/vector and also the vector fifth in the example beneath the article.

James · Accepted Answer · 2011-11-22 01:18:02Z

6

std::vector<std::string> blah(a, a + LENGTH_OF_ARRAY)

edited Nov 22, 2011 at 1:18

James

25.7k13 gold badges94 silver badges136 bronze badges

answered Jun 10, 2011 at 14:18

John

2,42516 silver badges21 bronze badges

Comments

Robᵩ · Accepted Answer · 2011-06-10 14:34:58Z

2

#include<vector>
// #include<conio.h>
#include<iostream>
#include <iterator>
#include <algorithm>

using namespace std;

int main()
{
  const char *a[3]={"field1","field2","field3"};

  // If you want to create a brand new vector
  vector<string> v(a, a+3);
  std::copy(v.begin(), v.end(), ostream_iterator<string>(cout, "\n"));

  vector<string> v2;
  // Or, if you already have an existing vector
  vector<string>(a,a+3).swap(v2);
  std::copy(v2.begin(), v2.end(), ostream_iterator<string>(cout, "\n"));

  vector<string> v3;
  v3.push_back("field0");
  // Or, if you want to add strings to an existing vector
  v3.insert(v3.end(), a, a+3);
  std::copy(v3.begin(), v3.end(), ostream_iterator<string>(cout, "\n"));

}

edited Jun 10, 2011 at 14:34

answered Jun 10, 2011 at 14:24

Robᵩ

170k20 gold badges251 silver badges323 bronze badges

Comments

holtavolt · Accepted Answer · 2011-06-10 14:18:28Z

0

You use the insert method to add content to a vector. Take a look at the sample fragment from here: http://www.cplusplus.com/reference/stl/vector/insert/

answered Jun 10, 2011 at 14:18

holtavolt

4,5171 gold badge29 silver badges43 bronze badges

Collectives™ on Stack Overflow

copying c array of strings into vector of std::string

4 Answers 4

2 Comments

Comments

Comments

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

4 Answers 4

2 Comments

Comments

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related