bool check_word(const std::vector<std::vector<char> > &grid, int width, int height, int x, int y, int direction, const char *word) {  // direction is 0-7, 0 being right, and 0+ turning in a clockwise direction.  static const int dirx[8] = {1, 1, 0, -1, -1, -1,  0,  1};  static const int diry[8] = {0, 1, 1,  1,  0, -1, -1, -1};  int len = std::strlen(word);    if(x < 0 || y < 0 || x >= width || y >= height || // check if starting point is outside of grid     x+dirx[direction]*len < 0 || y+diry[direction]*len < 0 || // check if ending point is outside of grid     x+dirx[direction]*len >= width || y+diry[direction]*len >= height)   return false;     // Check if the letters in the grid match the word.  for(int p = 0; p < len; ++p)   if(grid[x+dirx[direction]*p][y+diry[direction]*p] != word[p])    return false;  // Everything is okay.  return true; }