MCQ IN COMPUTER SCIENCE & ENGINEERING

COMPUTER SCIENCE AND ENGINEERING

COMPILER DESIGN

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

In programming language, keywords, constants, identifiers, strings, numbers, operators and punctuations symbols can be considered as?

A	Lexemes
B	Tokens
C	Symbols
D	Pattern

Explanation:

Detailed explanation-1: -In programming language, keywords, constants, identifiers, strings, numbers, operators and punctuations symbols can be considered as tokens. int value = 100; contains the tokens: int (keyword), value (identifier), = (operator), 100 (constant) and; (symbol).

Detailed explanation-2: -A programming token is the basic component of source code. Characters are categorized as one of five classes of tokens that describe their functions (constants, identifiers, operators, reserved words, and separators) in accordance with the rules of the programming language.

Detailed explanation-3: -In programming, a token is a single element of a programming language. There are five categories of tokens: 1) constants, 2) identifiers, 3) operators, 4) separators, and 5) reserved words. For example, the reserved words “new” and “function” are tokens of the JavaScript language.

Detailed explanation-4: -C Tokens are of 6 types, and they are classified as: Identifiers, Keywords, Constants, Operators, Special Characters and Strings.

There is 1 question to complete.