[redhead]

This looks like it is something which can be handled in a POSIX environment, so I took a chance and moved the thread to "Platform/API C++"

Now you want to parse arguments to your program.. there are different ways to handle that, if you want it to be ANSI/ISO compliant, then you need to loop through argv[] from 1 to (argc -1) looking for your desired flag, and shift every following items so you'd end up with an argv[] which only holds the users file-names...

However, here comes the POSIX part in, theres a very userfriendly function called getopt() And you'd use it in a way like this:

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>

int main(int argc, char* argv[])
{
  char opt;    /* this will hold the return value from optind */
  int count=1, j, i; /* as default we create one file */
  while( (opt = (char)getopt(argc, argv, "n:h")) > 0)
    {
      switch (opt)
	{
	case 'n':
          /* this will be the copies of filename created */
	  count = atoi(optarg);
	  break;
	case 'h':
	  printf("Usage: %s [-n <count>] [filename filename ... filename]\n", 
		 argv[0]);
	  return 0;
	}
    }
  /* at this point the provided optind from getopt() 
   * will point somewhere in argv[], we need to cover 
   * every position it might have 
   */

  /* if we're in luck it is pointing at the beginning */
  if(optind == 3){    
    /* assume the remaining arguments are "filename" qualifiers */
    for(i=optind; i < argc; ++i)
      for(j=1; j <= count; ++j)
	printf("Creating file: %s-%d\n", argv[i], j);
  }
  else
    if(optind == argc || optind > argc){
      /* it was given as the very last argument so correct that */
      for(i=1; i < (argc -2); ++i)
	for(j=1; j <= count; ++j)
	  printf("Creating file: %s-%d\n", argv[i], j);
    }
    else
      if(optind > 1 && optind < argc){
	/* it must've been given somewhere in the mittle (worst case) */
	for(i=1; i < (optind - 2); ++i)
	  for(j=1; j <= count; ++j)
	    printf("Creating file: %s-%d\n", argv[i], j);
	for(i+=2; i < argc; ++i)
	  for(j=1; j <= count; ++j)
	    printf("Creating file: %s-%d\n", argv[i], j);
      }
      else{
	/* was only called with filename */
	for(i=1; i < argc; ++i)
	  printf("Creating file: %s\n", argv[i]);
      }
  return 0;
}

Now if we remain in the POSIX world, theres a access() function, which can tell you if the file exists, and a number of other things, this might lighten your load with the fopen()/fread() thingy to check for an existing file...
ie:

#include <stdio.h>
#include <unistd.h>

int main(int argc, char* argv[])
{
  int i;
  for(i=1; i < argc; ++i)
    if(!access(argv[i], F_OK))
      printf("File exist: %s\n", argv[i]);
    else
      printf("File dosn't exist: %s\n", argv[i]);
  return 0;
}

Hope this sheds some light onto your frustration...