title: How can I replace a particular character with its upper-case counterpart?
body: <p>Consider the following string </p>
  
  <p>String = <strong>"this is for test. i'm new to perl! Please help. can u help? i hope so."</strong></p>
  
  <p>In the above string after <code>.</code> or <code>?</code> or <code>!</code> the next character should be in upper case. how can I do that?</p>
  
  <p>I'm reading from text file line by line and I need to write modified data to another file.</p>
  
  <p>your help will be greatly appreciated. </p>