Insert 10 duplicate value to vector : vector insert « vector « C++ Tutorial

#include <iostream>
#include <vector>
using namespace std;

int main()
{
  vector<char> v(10);
  vector<char> v2;
  char str[] = "<Vector>";
  unsigned int i;

  for(i=0; i<10; i++) 
     v[i] = i + 'a';

  for(i=0; str[i]; i++) 
     v2.push_back(str[i]);
  
  cout << "Original contents of v:\n";
  for(i=0; i<v.size(); i++) 
      cout << v[i] << " ";
  cout << "\n\n";

  vector<char>::iterator p = v.begin();
  p += 2; // point to 3rd element

  v.insert(p, 10, 'X');

  // display contents after insertion
  cout << "Size after inserting X's = " << v.size() << endl;
  cout << "Contents after insert:\n";
  for(i=0; i<v.size(); i++) cout << v[i] << " ";
  cout << "\n\n";

  return 0;
}

Original contents of v:
a b c d e f g h i j

Size after inserting X's = 20
Contents after insert:
a b X X X X X X X X X X c d e f g h i j

16.18.vector insert
	16.18.1.	Insert element by index
	16.18.2.	Insert 10 duplicate value to vector
	16.18.3.	Insert one vector to another vector
	16.18.4.	Insert elements from array
	16.18.5.	Insert 25 at the beginning
	16.18.6.	Insert 2 numbers of value 45 at the end
	16.18.7.	Insert two elements from another container in position [1]
	16.18.8.	Insert the contents of the array into the end of the vector
	16.18.9.	Combine insert and end to add elements to the end of vector