title: C++ file operations : Reading specific line in a file.
body: <p>I want to make a program, that can read a file from a certain point in the file.
  For example, if I had a file with this text:</p>
  
  <pre><code>1:
  Hello world. THis is the first string
  
  2:
  Hello. This is the second string
  
  3:
  Hi!
  </code></pre>
  
  <p>So, now that I have to file, how can I make the program only read the second string?</p>