#include <iostream>
#include <vector>
#include <bits/stdc++.h>
using namespace std;
 
int main() {
	// your code goes here
	vector<int> temp;
	cout << "inserting elements in vectors" << endl;
	for( int i = 0; i < 3; i++ )
	{
		temp.push_back(i);
	}
 
	// here we are using latest C++11 range based for loop
	// https://www.geeksforgeeks.org/range-based-loop-c/
	for( int count: temp )
	{
		cout << count << endl;
	}
 
	cout << "using insert" << endl;
	temp.insert( temp.begin(), 10 );
	for( int count: temp )
	{
		cout << count << endl;
	}
 
	cout << "using at" << endl;
	temp.at(0) = 111;
	for( int count: temp )
	{
		cout << count << endl;
	}
 
	cout << "using []" << endl;
	temp[0] = 222;
	for( int count: temp )
	{
		cout << count << endl;
	}
 
	auto it = find(temp.begin(), temp.end(), 2);
	if (it != temp.end()) 
	{
		int index = it - temp.begin();
		cout << "element found at" << index << endl;
	}
	else 
	{
		cout << "element not found" << endl;
	}
 
	return 0;
}