Cse240 Midterm (Quiz Questions) With Complete Solutions

CSE240 MIDTERM (QUIZ QUESTIONS) WITH COMPLETES SOLUTIONS




Learning the concepts, logic and problem solving of programming unlocks our ability to learn
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new languages - ans-TRUE d d dd




Reliability speaks to how easily a programmer can express themselves reliably within the lan
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guage - ans-FALSE d dd




Orthogonality... - ans-Sort = One-to-Many, Compositional = Many-to- d dd d d d d d




Many, Number = general lack of restrictions in reproducing the features of your code
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If I have set of commands S1 that describe data types in my language and a set of commands S
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2 that describe creation of variables:
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S1: int, decimal, bool
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S2: <type> <name>, <type> <name> = <value>, constant <type> <name> = <value>
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The set S3: int <name>, int <name> = <value>, constant int <name> = <value> --
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demonstrates what kind of orthogonality? - ans-SORT ORTHOGONALITY
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When evaluating a programming language the category Writeability describes: - ans-
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This concept is concerned with the actual production of code and the ability of the programmer
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to easily use the language... syntax, abstraction, expressivity
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When evaluating a programming language the category Efficiency describes: - ans-
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The 'first concern' historically. Concerned with how fast the code compiles and run
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When evaluating a programming language the category Reliability describes: - ans-
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This concept is concerned with the internal safety and consistency of the language ... type che
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cking, exceptions, etc. d d




Autocode and FORTRAN are considered to be the first high-level programming languages -
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ans-TRUE
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This quote: d




"When piloting a helicopter - changing speed can/
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will change your direction and possibly vice versa"
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Demonstrates that changing speed and/or direction is Orthogonal - ans-FALSE d d d d d d d d dd




What programming language characteristics impact the readability of the programs written in
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this language? - ans-Control Structures, Data Structures, Syntax Design
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, In contrast to Web 1.0, what is the key function of Web 2.0? - ans-
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Web is the computing platform d d d d




What is a feature of object-oriented computing? - ans-encapsulation of states
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Event-driven computing paradigm is to.... - ans- d d d d d dd




define a set of events and write an event handler for each event.
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What programming paradigm does Fortran belong to? - ans-imperative
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Which command will have a loop when expressed in a syntax graph? - ans-switch
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A programming languages can be broken down into four structural layers. Identify these layer
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s. - ans-Syntax, Semantic, Contextual,
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Can the identifier "base_variable" be created from the following BNF ruleset? - ans-
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<char> ::= a | b | c | ... | s | ... | x | y | z d d d d d d d d d d d d d d d d d d




<identifier> ::= <char> | <char> <identifer> d d d d d




No - there is an underscore in the identifier name that cannot be generated.
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What does the | (pipe) symbol in a BNF rule mean? - ans-
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It is an or statement. Choose one of the options
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Which commands (constructs) do NOT have a loop when expressed in syntax graphs?
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Select all that apply - ans-if-then-else
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for ( <init-expr>; <test-expr>; <increment-expr> ) {<statements>}
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while (condition) do {statements;} d d d




Given:
Very Simple Programming Language (VSPL)
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<char> ::= a | b | c | ... | z | 0 | 1 | ... | 9 d d d d d d d d d d d d d d d d d d




<operator> ::= + | - | * | / | % | < | > | == | >= | <= d d d d d d d d d d d d d d d d d d d d




<variable> ::= <char> | <char> <variable> d d d d d




<expr> ::= <variable> <operator> <variable> | ( <expr> ) <operator> ( <expr> )
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<assign> ::= <variable> = <expr>; d d d d




<statements> ::= <assign> | <assign> <statements> d d d d d




The following is valid: d d d




a = x + y; b = s * t; c = w + v; - ans-TRUE
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Given:
Very Simple Programming Language (VSPL)
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