puzzles.c - The function getPuzzle of playHangman.

Lecture 1 - slide 3 : 22 Program 7

puzzle getPuzzle(int n){
  FILE *puzzleFile;
  puzzle result;
  int i, ch, num;
  char *puzzleLine, *catStr, *puzzleStr;
  char *puzzleLineQ1, *puzzleLineQ2, *puzzleLineQ3, *puzzleLineQ4;

  puzzleLine = (char*)malloc(PUZZLEMAXCOUNT);
  catStr = (char*)calloc(PUZZLEMAXCOUNT,1);
  puzzleStr = (char*)calloc(PUZZLEMAXCOUNT,1);

  puzzleFile = fopen(puzzleFileName, "r");

  for(i = 0; i < n*4;  i++) matchDoubleQuoteFile(puzzleFile); /* read through n*4 double quotes */
  while (isspace(ch = getc(puzzleFile)));                 /* skip white space */
  ungetc(ch,puzzleFile);                                  /* put double quote back */

  fgets(puzzleLine, PUZZLEMAXCOUNT, puzzleFile);          /* read a line from puzzle file */

  puzzleLineQ1 = matchDoubleQuoteStr(puzzleLine);         /* identify quotes in string */
  puzzleLineQ2 = matchDoubleQuoteStr(puzzleLineQ1+1);
  puzzleLineQ3 = matchDoubleQuoteStr(puzzleLineQ2+1);
  puzzleLineQ4 = matchDoubleQuoteStr(puzzleLineQ3+1);

  strncpy(catStr, puzzleLineQ1+1, puzzleLineQ2 - puzzleLineQ1 - 1);
  strncpy(puzzleStr, puzzleLineQ3+1, puzzleLineQ4 - puzzleLineQ3 - 1);

  num = 0;
  for(i = 0; i < strlen(puzzleStr); i++)  if (isalpha(puzzleStr[i])) num++;

  result.category = catStr,
  result.phrase = puzzleStr;
  result.numberOfCharsToGuess = num;
  fclose(puzzleFile);
  return result;
}