/*
 * Copy one file into another, a line at a time.
 */
#include <stdio.h>
#include <stddef.h>
#include <string.h>

#define MAXLEN  80

long fileCopy(const char *dest, const char *source)
{
  FILE *sfp, *dfp;              /* source and destination files */
  char line[MAXLEN + 1];        /* next input line */
  long cnt = -1L;               /* count of characters written */
  
  if ((sfp = fopen(source,"rb")) == NULL)
    printf("Can't open %s for reading\n", source);
  else
  {
    if ((dfp = fopen(dest,"wb")) == NULL)
      printf("Can't open %s for writing\n", dest);
    else
    {
      for (cnt = 0L;
           fgets(line, sizeof(line), sfp) != NULL;
           cnt += strlen(line))
        fputs(line,dfp);
      fclose(dfp);
    }
    fclose(sfp);
  }
  return cnt;
}