How to enable the authors link in each post?

I am building a new wordpress blog, My blog posts doesn't show the author link.
How to put a link to author profile page? I want to allow some authors to post in my blog. please help me

 

Just add the following code where you want it to be displayed within the loop:

<?php _e('By','options'); ?> <?php the_author_posts_link(); ?>

Code (markup):

This will return - By <AUTHOR PROFILE LINK>

 

but where should i put the code, Which file i need to edit?
thanks

 

Well, if you want it on your main index page simply edit your template file home.php

Place the code anywhere after this code:

<?php if(have_posts()) : while(have_posts()) : the_post(); ?>

Code (markup):

but before this:

<?php endif; ?>

Code (markup):

This bit is called the "loop."

To place the author on your single posts, edit your single post template "post.php"

The code works anywhere within the loop but where you put it really depends on where you want it shown. I hope this has given you enough information to continue.

 

My blog will be having multiple authors. So where should i put the code?
i want their name to be linked to their respective profile.

 

OK, i have made it, whats this "<?php _e('By','options'); ?>" means?

 

Thank you for this, I have been looking to get this solution for a while.

Rep added.