Thread: Input buffer question

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;

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.