C++ Program

This header declares a set of functions to classify and transform individual characters. Functions These functions take the int equivalent of one character as parameter and return an int that can either be another character or a value representing a boolean value: an int value of 0 means false, and an int value different from 0 represents true. There are two sets of functions: Character classification functions They check whether the character passed as parameter belongs to a certain category: isalnum Check if character is alphanumeric (function ) isalpha Check if character is alphabetic (function ) isblank Check if character is blank (function ) iscntrl Check if character is a control character (function ) isdigit Check if character is decimal digit (function ) isgraph Check if character has graphical representation (function ) islower Check if character is lowercase letter (function ) isprint Check if character is print...