unit-1_CD

The lexical analyzer takes ____ as input and produces a list of ___ of output.

• Machine code, mnemonic

• Tokens, source code

• Source code, tokens

• Both a and b

Lexical analysis is about breaking a sequence of characters into

• Tokens

• Lines

• Groups

• Packets

The phase Syntax Analysis is modelled on the basis of

• High level language

• Low level language

• Context free grammar

• Regular grammar

Compiler is a program that

• Accepts a program written in a high level language and produces an object program

• Appears to execute a source program as if it were machine language

• Automates the translation of assembly language into machine language

• Places programs into memory and prepares them for execution

Loader is a program that

• Places programs into memory and prepares them for execution

• Automates the translation of assembly language into machine language

• Accepts a program written in a high level language and produces an object program

• Appears to execute a source program as if it were machine language

Interpreter is preferred over a compiler is

• During program development phase

• When storage space is to be minimized

• When efficient use of computer resources is the consideration

• All of these

Compiler should report the presence of _____ in the source program, in translation process.

• Text

• Errors

• Classes

• Objects

Symbol table can be used for

• Storage allocation

• Checking type compatibility

• Suppressing duplication of error messages

• All of these

The cost of developing a compiler is proportional to

• Flexibility of the available instruction set

• Complexity of the architecture of the target machine

• Complexity of the source language

• All of these

The lexical analyzer also known as------.

• Scanner

• Tokenizer

• Parser

• Both a and b