get list of numbers from stdin and tokenize them - c++

Question

How would I get a list of numbers from the user and then tokenize them.
This is what I have but it doesn't get anything except for the first number:
#include <iostream>
#include <sstream>
#include <vector>
#include <string>
using namespace std;
int main()
{
string line = "";
cin >> line;
stringstream lineStream(line);
int i;
vector<int> values;
while (lineStream >> i)
values.push_back(i);
for(int i=0; i<values.size(); i++)
cout << values[i] << endl;
system("PAUSE");
return 0;
}
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Answer 1

Here is probably the easiest way to read values from cin into a container:
#include <iostream>
#include <iterator>
#include <vector>
int main()
{
std::vector<int> values;
std::copy(
std::istream_iterator<int>(std::cin),
std::istream_iterator<int>(),
std::back_inserter(values));
// For symmetry with the question copy back to std::cout
std::copy(
values.begin(),
values.end(),
std::ostream_iterator<int>(std::cout,"\n"));
}

Answer 2

I believe cin >> breaks on whitespace, which means you're only getting the first number entered.
try:
getline(cin, line);

Answer 3

Like Donnie mentioned cin breaks on whitespace, so do overcome this we can use a 'getline()', the following example works nicely:
#include <iostream>
#include <sstream>
#include <vector>
#include <string>
using namespace std;
int main()
{
string line = "";
::getline(std::cin,line,'\n');
std::stringstream lineStream(line);
int i;
std::vector<int> values;
while (lineStream >> i)
values.push_back(i);
for(int i=0; i<values.size(); i++)
cout << values[i] << endl;
system("PAUSE");
return 0;
}

Answer 4

on top of main
string line = "";
getline (cin, line );
stringstream lineStream(line);

Answer 5

Yep, and is the string version of getline, no the istream one.

Answer 6

OK: Pavel Minaev has the best answer.
But all the people mentioning that cin breaks on white space.
That is a good thing (because it also ignores white space);
#include <iostream>
#include <sstream>
#include <vector>
#include <string>
using namespace std;
int main()
{
int i;
vector<int> values;
// prefer to use std::copy() but this works.
while (std::cin >> i)
{
values.push_back(i);
}
// prefer to use std::copy but this works.
for(vector<int>::const_iterator loop = values.begin();loop != values.end();++loop)
{
cout << *loop << endl;
}
return 0;
}