std::advance in C++

// C++ program to illustrate // using std::advance #include <bits/stdc++.h> // Driver code int main() {  // Vector container  std::vector<int> vec;  // Initialising vector  for (int i = 0; i < 10; i++)  vec.push_back(i * 10);  // Printing the vector elements  for (int i = 0; i < 10; i++) {  std::cout << vec[i] << " ";  }  std::cout << std::endl;  // Declaring the vector iterator  std::vector<int>::iterator it = vec.begin();  // Printing alternate elements  while (it < vec.end()) {  std::cout << *it << " ";  std::advance(it, 2);  } } 

#include <iostream> #include<bits/stdc++.h> using namespace std; int main() {  vector<int >vect(10);  //insert the ten element in the vector  for(int i=1;i<=10;i++)  {  vect[i-1]=i;  }  //iterator pointing to first element.  vector<int >::iterator it=vect.begin();    for(int i=1;i<=10;i++)  {  cout<<*it<<" ";  it++;    }  vector<int >::iterator it1=vect.begin();  //here it is pointing to the 3rd element.   advance(it1,2);//here second argument is the index base.    cout<<endl;    cout<<*it1;  //print it1 pointing to the 3rd position.  return 0; } /* This code is contributed by Sameer Hake/*