Checking if input file value is bigger than 10^9
<p>So basically, I have something like this -
Input file with 2 integers.
Code, something like this -</p>

<pre><code>#include &lt;iostream&gt;
#include &lt;fstream&gt;
using namespace std;
int main() {
  unsigned long long n, k;
  ifstream input_file("file.txt");
  input_file &gt;&gt; n &gt;&gt; k;
  if(n &gt;= 10^9 || k &gt;= 10^9) {
    cout &lt;&lt; "0" &lt;&lt; endl;
  }
  return 0;
}
</code></pre>

<p>So, is there any chance to check if any of theese two integers are bigger than 10^9? Basically, if I assign thoose integers to unsigned long long, and if they are bigger than 10^9, they automatically turn to some random value, that fits inside unsigned long long, am I right, and that means that there is no chance to check it, or am I'm missing something?</p>
