ABL electronic PIC Microcontrollers PIC16 - Manual (Page 290)

mikroC - C Compiler for Microchip PIC microcontrollers
mikroC
making it simple...
282
MikroElektronika: Development tools - Books - Compilers
page
Prototype char iscntrl(char character);
Description Function returns 1 if the
character
is a control character or delete (decimal 0-31 and
127), otherwise returns zero.
iscntrl
Prototype
char isdigit(char character);
Description Function returns 1 if the
character
is a digit (0-9), otherwise returns zero.
isdigit
Prototype char isgraph(char character);
Description Function returns 1 if the
character
is a printable character, excluding the space (deci-
mal 32), otherwise returns zero.
isgraph
Prototype char isalpha(char character);
Description Function returns 1 if the
character
is alphabetic (A-Z, a-z), otherwise returns zero.
isalpha