Thread: String comparing in C

I know Perl, and I'm so used to the operators for it.
For example, in perl..

Code:

if($input =~ /help (.*)/)
{
     $command = $1;
     if($command eq "echo")
     {
          #Example
     }
     else {
             print "Command not found.\n";
      }
}

What is the C equivalent?
Thanks,
Austin B.