#include<iostream>
#include<string>
#include<vector>
 
 
using namespace std;
 
int main()
{
	// here are our original strings in an array of strings
        // for the sake of this example imagine that strs[] was
	// passed in as an argument so we don't know upfront how 
        // many strings are in the array 
	string strs[] = {"String1","String2","String3","String4","String5"};
 
	// But before we attempt to reserve some space on a vector,
        // we need to know how many strings there are..... 
        // trying to count them doing something like this
	// int count=0;
	// while (strs[count])
	//     ++count;
	// 
	// Would not work as std::string cannot be evaluated like 
        // that...So we actually need to know upfront how many there are
	// in order to reserve space in the vector.
	int count=5; // so this value would have to be passed-in too!
 
	// reserve 'count' spaces in our vector
	vector<string> vec(count);
 
	// now our vector has enough space to hold all of the strings in the passed-in array....
    // so we'll set up a loop to copy strings from the array to the vector:
	for(int index=0;index<count; ++index)
	{
                // This can be used, but it is dangerous
		//vec[index] = strs[index];
 
                // This is safer..Less likely to cause a crash if you 
                // overstep the mark with index!
                vec.at(index]=strs[index];
	}
 
	// Now let's see what the vector contains
	cout << "The strings in the vector are:" << endl;
 
	for(vector<string>::iterator iter = vec.begin(); iter!=vec.end(); iter++)
	{
		cout << (*iter) << endl;
	}
 
        // enter any random string to quit!
	string dummy;
	getline(cin, dummy);
}

#include<iostream>
#include<string>
#include<vector>
 
using namespace std;
 
int main()
{
	string strs[] = {"String1","String2","String3","String4","String5"};
    // we still need to know how many strings there are
	int count=5; 
 
	// no need to reserve any space in the vector 'cause we'll use push_back()
	std::vector<string> vec;
 
	// so lets populate the vector....
	for(int index=0;index<count; ++index)
	{
		vec.push_back(strs[index]);
	}
 
	// Now let's see what the vector contains
	cout << "The strings in the vector are:" << endl;
 
	for(vector<string>::iterator iter = vec.begin(); iter!=vec.end(); iter++)
	{
		cout << (*iter) << endl;
	}
 
	string dummy;
	getline(cin, dummy);
}

#include <iostream>
#include <string>
#include <vector>
#include <algorithm>
#include <iterator>
using namespace std;

int main()
{
   string init[] = {"one", "two", "three", "four", "five" };
   vector<string> vec(init, init + sizeof init / sizeof *init);
   copy(vec.begin(), vec.end(), 
        ostream_iterator<string>(cout, "\n"));
   return 0;
}

/* my output
one
two
three
four
five
*/

	string words[3] = {"hello","olla","namesta"};
	vector<string> vec(words,words+3);
 
	for(int i = 0; i < vec.size(); i++)
		cout<<words[i]<<endl;

vector<int> v(); // a void v vector
vector<int> v(4, 100); // v is 100,100,100,100
vector<int> v(words, words + 3); copy each element of the array words, from the first to the third
vector<int> x(v); // x is a copy of v