Refactoring C-style pretty-typing in C ++ - style pretty-typing

Basic conversion mechanics:

• Convert each printf
  
  -style %w.pf
  
  or clause %w.pe
  
  , where w
  
  is the field width and p
  
  is the number of digits of precision, to << setw(w) << setprecision(p) << fixed
  
  .
• Convert each printf
  
  -style %wd
  
  or %wi
  
  , where w
  
  is the field width, to << setw(w)
  
  .
• Convert "\n"
  
  to endl
  
  if needed.

Process for printf

:

• Create char[]
  
  (call it text
  
  ) with sufficient overall width.
• Convert printf(...)
  
  to sprintf(text, ...)
  
  and use cout << text
  
  for actual text printing.
• Complete the general instructions.

Process for fprintf

:

• Same as printf
  
  but use fstream
  
  instead cout
  
  .
  • If you already have a public C-style object FILE
    
    that you don't want to refactor at this time, it gets a little sticky (but can be done ).
• Complete the general instructions.

Process for sprintf

:

• If the string being written is only used for output to the stream in the current context, refer to one of the two refactorings above.
  • Otherwise, start by creating stringstream
    
    and streaming the content char[]
    
    you are writing to. If you're still going to learn from it char*
    
    , you can do std::stringstream::str().c_str()
    
    .
• Complete the general instructions.

General instructions:

• Convert each sentence one at a time to C ++ style.
• Remove *printf
  
  and char[]
  
  ads as needed when done.
• Use other refactorings as needed, such as Fowler, Refactoring.