#include <iostream>
using std::cout;
using std::cin;

#include <string>
using std::string;

#include <vector>
using std::vector;
using std::begin;
using std::end;

#include <algorithm> 
using std::sort;
using std::count;

int main()
{
		vector<int> nums;

		for (int i = 0; i < 10; i++)
		{
			nums.push_back(i);
		}

		for (auto item : nums)
		{
			cout << item << " ";
		}
		cout << '\n';

		vector<string> words;

		cout << "enter three words ";
		for (int i = 0; i < 3; i++)
		{
			string s;
			cin >> s;
			words.push_back(s);
		}

		for (auto item : words)
		{
			cout << item << " ";
		}
		cout << '\n';

		cout << "int vector nums has " << nums.size() << " elements." << '\n';

		nums[5] = 3;
		nums[6] = -1;
		nums[1] = 99;

		for (auto item : nums)
		{
			cout << item << " ";
		}
		cout << '\n';

		for (unsigned int i = 0; i < nums.size(); i++)
		{
			cout << nums[i] << " ";
		}
		cout << '\n';

		for (auto i = begin(nums); i != end(nums); i++)
		{
			cout << *i << " ";
		}
		cout << '\n';

		sort(begin(words), end(words));
		for (auto item : words)
		{
			cout << item << " ";
		}
		cout << '\n';

		int threes = count(begin(nums), end(nums), 3);
		cout << "vector of ints has " << threes << " elements with value 3" << '\n';

		int tees = count(begin(words[0]), end(words[0]), 't');
		cout << "first word has " << tees << " letter t's" << '\n';

		return 0;

}