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/ C/C++ Users Group Library 1996 July / C-C++ Users Group Library July 1996.iso / vol_200 / 223_01 / isalnum.c < prev    next >
Text File  |  1980-01-01  |  384b  |  9 lines
  1. /*
  2. ** return 'true' if c is alphanumeric
  3. */
  4. isalnum(c) int c; {
  5.   return ((c<='z' && c>='a') ||
  6.           (c<='Z' && c>='A') ||
  7.           (c<='9' && c>='0'));
  8.   }
  9.