TOPL FINALS EXAM

What is the form or structure of the expressions, statements, and program units

What is the meaning of the expressions, statements, and program units

It is a string of characters over some alphabet

It is a set of sentences

It is the lowest level syntactic unit of a language

It is a category of lexemes

A recognition device reads input strings over the alphabet of the language and decides whether the input strings belong to the language

A device that generates sentences of a language

It is invented by John Backus to describe Algol 58

It is a metalanguage used to describe the syntax of language

It is not a language generator or a recognizer in itself

________ Grammars can be used to generate and recognize strings in a language

It is developed by Noam Chomsky in the mid-1950's

It is of language generators, meant to describe the syntax of natural languages

It define a class of languages called context-free languages

It is a process to check if a given sentence is a part of the grammar

A grammar is _______ if and only if it generates a sentence that has two or more distinct parse trees

These are Imperative languages are abstractions of von Neumann architecture (pick 2)

To design a type, must consider scope, lifetime, type checking, initialization, and type compatibility

To design a type, must NOT consider scope, lifetime, type checking, initialization, and type compatibility

It is a design issue for Names

It is a design issue for Names

It is a design issue for Names

It is a design issue for Names

It is a design issue for Names

It has a design issue for name length of 'maximum of 31'

It has a design issue for name length of 'no limit but only the first 63 are significant; also, external names are limited to a maximum of 31'

It has a design issue for name length of 'implementers often impose one'

It has a design issue for name special characters of 'all variable names must begin with dollar signs'

It has a design issue for name special characters of 'all variable names begin with special characters, which specify the variable’s type'

It has a design issue for name special characters of 'variable names that begin with @ are instance variables; those that begin with @@ are class variables'

It has a design issue for name case sensitivity of 'predefined names are mixed case'

It has a design issue for name special words of having '300 reserved words'

This disadvantage is about readability where names that look alike are different

This disadvantage is about readability where used to delimit or separate statement clauses

This disadvantage is where if it's too short, they cannot be connotative

It is an abstraction of a memory cell

Not all variables have them

The memory address with which it is associated

Determines the range of values of variables and the set of operations that are defined for values of that type; in the case of floating point, type also determines the precision

The contents of the location with which the variable is associated

It is of a variable is its address

It is of a variable is its value

It is the physical cell or collection of cells associated with a variable

It is an association, such as between an attribute and an entity, or between an operation and a symbol

It is the time at which a binding takes place

It is the possible binding time at which bind operator symbols to operations

It is the possible binding time at which bind floating point type to a representation

It is the possible binding time at which bind a variable to a type in C or Java

It is the possible binding time at which bind a C or C++ static variable to a memory cell

It is the possible binding time at which bind a nonstatic local variable to a memory cell

The binding is ____ is if it first occurs before run time and remains unchanged throughout program execution.

The binding is ____ if it first occurs during execution or can change during execution of the program