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[QUOTE="electrixnow, post: 2543402"]
Sorry but I am a newbie and I searched for usage on std::map and found
nothing. Can you give me an exact example of:

std::map<int, char> bData = dataFrom( pathToB ); // open file r/w
std::ifstream a( pathToA );   // open file for read
  std::ofstream c( pathToC );  // open file for write

while( !!a )  // why 2 !  // looking for NULL or EOF
  {
      -- read one line from a  //  I can use inf.getline
      -- split the line into doc # and rev char // use strtok_s ?
      -- check against bData // use string or pointer ?
      -- if different revision char:
      --     update bData
      --     write line to c
  }
  assert( a.eof() );  // are you checking for eof again
  save( bData, pathToB );   // could'nt find save usage in help

Sorry I am not an expert, but I am new and this task seems simple but
has been
frustraiting. I was hung up on cannot convert from 'char *' to 'char'

I understand the flow you created and it's on the money. I wish I had
some good examples to study. I have been looking all over and have not
found any good sites with lots of simple VC++ examples.

Please help.
[/QUOTE]

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