title: fortran loop syntax error in data declaration
body: <p>I'm new to fortran and been hacking at this for a bit but not sure what is wrong with my coding.</p>
  
  <p>The error I'm seeing is: </p>
  
  <pre><code>Error: Syntax error in data declaration at (1)
  
  
  PROGRAM MAIN
      INTEGER I. I_START. I_END. I_INC
      REAL A(100)
  
      I_START = 1
      I_END = 100
      I_INC = 1
  
      DO I = I_START, I_END, I_INC
  
         A(I) = 0.0E0
  
      END DO
  
  END
  </code></pre>