what is char in c++ code example

Example 1: char c++

isdigit() - Check if character is decimal digit 
isalpha() - Check if character is alphabetic
isblank() - Check if character is blank
islower() - Check if character is lowercase letter
isupper() - Check if character is uppercase letter
isalnum() - Check if character is alphanumeric

Example 2: c++ char define

// syntax: 
// char [] = { '<1st-char>',  '<2nd-char>', ... , '', '\0'}; 

// example (to store 'Hello' in the YourVar variable): 
char YourVar[] = {'H','e','l','l','o','\0'}; // NOTE: the \0 marks the end of the char array

Example 3: working with char and string c++

String and Char

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