There are some character which can’t be typed by keyboard in C++ Programming language. These are called non-graphic characters.
An escape sequence is represented by backslash (\) followed by one or more characters.
List of common escape sequences.
|\n||Newline or line feed|
|\xhh||Hexadecimal number(hh represents the number in hexadecimal)|
|\000||Octal number (00 represents the number in octal)|