title: Reading the data in the file in a certain way
body: <p>i have some txt file . content  of this file like that</p>
  <ul>
  <li><p>ID: 01</p>
  </li>
  <li><p>REQ: 22 12 34</p>
  </li>
  <li><p>RES: 62 12 34 69 51 6D 69 6E 65
  i want just 2. row but without REQ: part(22 12 34)</p>
  <pre><code>  ifstream file(&quot;simulation.txt&quot;);
    int counter=1;
    if (file.is_open())
   {
    string line;
  
    while (getline(file, line))
    {
    //  cout &lt;&lt; line &lt;&lt; endl;
        if(counter==2){
        cout &lt;&lt; line &lt;&lt; endl;
        }
        counter++;
    }
  </code></pre>
  <p>}
  this is my code i can finde 2. row but how can i delet REQ: part</p>
  </li>
  </ul>