Is there a size limit for std::cin buffer?
<p>I want to get 300 numbers from the user and print out the largest number. First, I use this code to ask for input:</p>
<pre><code>cout &lt;&lt; &quot;Enter the array\n&quot;;
</code></pre>
<p>Then I paste 300 number into the terminal and hit enter. Then use this code to capture the input:</p>
<pre><code>int count = 300;
int inputArray[count];
for (int i = 0; i&lt;count; ++i) {
    cin &gt;&gt; inputArray[i];
}
</code></pre>
<p>And the code doesn't work, it just asks for more and more numbers.</p>
<p>But when I paste in 150 numbers at a time, (for example, paste 1 to 150, hit enter, then paste 151 to 300, hit enter again) the code works just fine. So, I'm guessing there is a limit for the buffer on how many input it can handle. Am I right? How does std::cin works?</p>
<p>Side question: should I get the data from a file instead of using cin?</p>
<p>My full code:</p>
<pre><code>#include &lt;string&gt;
#include &lt;iostream&gt;
using namespace std;
int main()
{
    int count = 300;
    cout &lt;&lt; &quot;Enter the numbers\n&quot;;
    int inputArray[count];
    for (int i = 0; i&lt;count; ++i) {
        cin &gt;&gt; inputArray[i];
    }
    cout &lt;&lt; &quot;Got input\n&quot;;
    int bigNum = inputArray[0];
    for (int i=1; i&lt;count; ++i) {
        int in = inputArray[i];
        if (in &gt; bigNum) {
            bigNum = in;
        }
    }
    cout &lt;&lt; &quot;The largest number is &quot; &lt;&lt; bigNum &lt;&lt; endl;
    return 0;
}
</code></pre>