text: #include <limits.h>
  #define SCHAR_MAX                                                          (127)
  
  /** signed char maximum **/
  
  /***
  is the maximum value representable as a TYPE(signed char).
  ***/
  
  /*
  VALUE_MIN(127)
  POSIX_SPECIFIC(V_ALUE_FIXED(127)
  */
  /*
  STDC(1)
  */
  