Demonstrate insert_iterator in a vector : Vector Utility « Data Structure « C++






Demonstrate insert_iterator in a vector

Demonstrate insert_iterator in a vector
#include <iostream>
#include <iterator>
#include <vector>
using namespace std;

int main()
{
  vector<int> vectorObject;
  vector<int>::iterator itr;
  int i;

  for(i = 0; i <5; i++)
    vectorObject.push_back( i );

  cout << "Original contents of vectorObject: ";
  itr = vectorObject.begin();
  while(itr != vectorObject.end())
    cout << *itr++ << " ";
  cout << endl;

  itr = vectorObject.begin();
  itr += 2; // point to element 2


  insert_iterator<vector<int> > i_itr(vectorObject, itr);  // create insert_iterator to element 2

 
  *i_itr++ = 100;    // insert rather than overwrite
  *i_itr = 200;

  cout << "vectorObject after insertion: ";
  itr = vectorObject.begin();
  while(itr != vectorObject.end())
    cout << *itr++ << " ";

  return 0;
}

           
       








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