COMPUTER SCIENCE AND ENGINEERING
COMPILER DESIGN
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
keyword
|
|
|
operator
|
|
|
lexeme
|
|
|
token
|
Detailed explanation-1: -Token. Identifier. A token is the smallest element of a program that is meaningful to the compiler. Identifiers are used to name things like classes, objects, variables, arrays, functions an so on.
Detailed explanation-2: -Tokens are the smallest elements of a program, which are meaningful to the compiler. The following are the types of tokens: Keywords, Identifiers, Constant, Strings, Operators, etc.
Detailed explanation-3: -A token is the smallest individual unit in a program. E.g. : keyword, identifiers, literals etc. whereas an identifier is the name given to different parts of a program. E.g. : variable, functions, classes etc.
Detailed explanation-4: -Therefore, we can say that tokens in C is the building block or the basic component for creating a program in C language. Let’s understand each token one by one. Identifiers in C are used for naming variables, functions, arrays, structures, etc. Identifiers in C are the user-defined words.
Detailed explanation-5: -In general, a token is an object that represents something else, such as another object (either physical or virtual), or an abstract concept as, for example, a gift is sometimes referred to as a token of the giver’s esteem for the recipient.