Access the elements of a vector through an iterator. : vector elements « vector « C++ Tutorial

1. C++ Tutorial
2. vector
3. vector elements

#include <iostream>
#include <vector>
#include <cctype>
using namespace std;
   
int main()
{
  vector<char> v(10); // create a vector of length 10
  vector<char>::iterator p; // create an iterator
  int i;
   
  // assign elements in vector a value
  p = v.begin();
  i = 0;
  while(p != v.end()) {
    *p = i + 'a';
    p++;
    i++;
  }
   
  // display contents of vector
  cout << "Original contents:\n";
  p = v.begin();
  while(p != v.end()) {
    cout << *p << " ";
    p++;
  }
  cout << "\n\n";
   
  // change contents of vector
  p = v.begin();
  while(p != v.end()) {
    *p = toupper(*p);
    p++;
  }
   
  // display contents of vector
  cout << "Modified Contents:\n";
  p = v.begin();
  while(p != v.end()) {
    cout << *p << " ";
    p++;
  }
  cout << endl;
   
  return 0;
}