What does \%3a mean in URL?

URL-encoding from 00 to 

ASCII Value	URL-encode
:	:
;	;
<
=	=

Does Unicode always have 2 bytes?

Unicode does not mean 2 bytes. Unicode defines code points that can be stored in many different ways (UCS-2, UTF-8, UTF-7, etc.). Encodings vary in simplicity and efficiency. Unicode has more than 65,535 (16 bits) worth of characters.

How is Unicode different from ASCII?

Unicode is the universal character encoding used to process, store and facilitate the interchange of text data in any language while ASCII is used for the representation of text such as symbols, letters, digits, etc. in computers.

What is difference between i ++ and i 1 in C?

The only difference is the order of operations between the increment of the variable and the value the operator returns. So basically ++i returns the value after it is incremented, while i++ return the value before it is incremented. At the end, in both cases the i will have its value incremented.

What is the difference between class and object?

It is a user-defined data type, that holds its own data members and member functions, which can be accessed and used by creating an instance of that class. It is the blueprint of any object….Difference between Class and Object.

S. No.	Class	Object
1	Class is used as a template for declaring and creating the objects.	An object is an instance of a class.

How many bytes is UTF-8?

4 bytes
UTF-8 is based on 8-bit code units. Each character is encoded as 1 to 4 bytes. The first 128 Unicode code points are encoded as 1 byte in UTF-8.

How is UTF-8 stored?

UTF-8 is a Unicode character encoding method. This means that UTF-8 takes the code point for a given Unicode character and translates it into a string of binary. It also does the reverse, reading in binary digits and converting them back to characters.

What is difference between ASCII and UTF-8?

UTF-8 encodes Unicode characters into a sequence of 8-bit bytes. By comparison, ASCII (American Standard Code for Information Interchange) includes 128 character codes. Eight-bit extensions of ASCII, (such as the commonly used Windows-ANSI codepage 1252 or ISO 8859-1 “Latin -1”) contain a maximum of 256 characters.