c - How do I pad a printf to take account of negative signs and variable length numbers? -

I am trying to output some numbers to the log file and I is currently doing this : printf ("% 03.1f \ n", myVar);

... where myVar is a float, the output looks like this:

  58.0 20.0 38.0 -50.0 800.0 150.0 100.0   
 I hope to produce the output of my code at the top of this post, but clearly something is wrong Can you use a flag only once? .. or something else going on here?   
 
 
 The width specification is the full width:  
  printf ("% 05.1 F \ n ", myVar); // pad with total width 5, 0, one digit after   
 to get your desired format:  
  printf ("% 06.1f \ N ", myVar);