Input buffer question

Hi,

I'm new to the boards and C++. I was wondering how I could read in multiple values from a line of data. I have a part of the program I was working on, here:

Code:

---


        cout << "Please enter" << x << " samples." << endl;
        cin >> sample;

        for (i = 1; i <= x; i++)
        {
                cout << "Sample " << i << " is " << sample << endl;
        }

---

basically, what i am having problems with is reading in the "x" samples from the input buffer. I can do it with characters, but not numbers. Can anyone help?

Code:

---

cout << "Please enter" << x << " samples." << endl;
for (int i = 0; i < x; i++)
  cin >> sample[x];

---

Something like that?

It depends on how the data is entered by the user. The >> operator is programmed to skip over any leading whitespace(spaces, tabs, newlines) and read in data until it encounters a whitespace character at which point it stops. So, if the user enters 3 numbers like this:

123

>> will read in 123--not 1. However, if the user enters data like this:

1 2 3

then >> will read in 1, and then the next time >> is used, it will read in 2, etc. In the latter case, if you want to read all the numbers at once, you can do this:

cin>>sample1>>sample2>>sample3;

yeah... guess so...but i want to do it for an unknown number of entries that the user would have entered in as 'x'

Code:

---

        #include <vector>
        using namespace std;
.
.
        vector<int> sample;

        cout << "Please enter" << x << " samples." << endl;
        int tmp;
        for (int i=0; i<x; ++i)
        {
                cin >> tmp;
                sample.push_back(tmp);
        }

        for (int i=0; i<sample.size(); ++i)
        {
                cout << "Sample " << i << " is " << sample[i] << endl;
        }

---

Or what SlyMaelstrom posted which uses an array.

Vector of course being more modern and potentially more useful depending on where you wanted to go from there.