#include <library.h>

void main()
{ char c;
  do
  { c = read_char();       // it was missing from library.h, but
                           // I just put it back in.
    switch (c)
    { case '0': case '1': case '2': case '3': case '4':
      case '5': case '6': case '7': case '8': case '9':
         cout << "That is a digit.\n";
         break;
      case 'a': case 'g': case 'l': case 'q': case 'v':
      case 'b': case 'h': case 'm': case 'r': case 'w':
      case 'c': case 'i': case 'n': case 's': case 'x':
      case 'd': case 'j': case 'o': case 't': case 'y':
      case 'e': case 'k': case 'p': case 'u': case 'z':
      case 'f':
         cout << "that is a little letter\n";
         break;
      case 'A': case 'G': case 'L': case 'Q': case 'V':
      case 'B': case 'H': case 'M': case 'R': case 'W':
      case 'C': case 'I': case 'N': case 'S': case 'X':
      case 'D': case 'J': case 'O': case 'T': case 'Y':
      case 'E': case 'K': case 'P': case 'U': case 'Z':
      case 'F':
         cout << "that is a capital letter\n";
         break;
      case ' ': case '\t':  // \t represents a tab
         cout << "that is blank space\n";
         break;
      default:
         cout << "That is something else\n"; } }
    while (c != '\n');
  cout << "all done.\n"; }