parsing a txt file in c++
<p>Hi I'm coming from C# and have been working with c++ alot lately and I need help,
I have a text file(500mb) that i need to load into an array(matrix).
the format on the text file is</p>

<pre><code>specimen  date      result
E1       111111    0.5
</code></pre>

<p>How can i just extract out the result of this and put only that into my matrix where each column would represent a different specimen? I know in C# i could eaisly parse this but i dont know how to do it in c++
thank you for your help ,i just want to know the commands or functions that I would need to know</p>

<pre><code>                 E1 ............En
result@ time 1   .................
                 .               .
                 . . .  . . . . ..
result@time n    .................
</code></pre>

<p>there are 7000 specimens , and 3 years worth of dates , the results range from 0.1 to 20000</p>
