title: read a line in Objective-C
body: <p>i've to read a .txt file , The file lokes like,</p>
  
  <pre><code>WIPRO=Class_Name1
  TCS=Class_Name2
  </code></pre>
  
  <p>Now i want to Class_Name1 and Class_Name2.How to get this string in Objective-C?
  I'm not finding any function in NSString to get the index of a character.Like how we have getIndex() in C#.tel me how to proceed.</p>