CSE 240 Midterm questions with complete solutions

CSE 240 Midterm questions with complete
solutions

What key feature of programming languages is supported by C++, but not Java? - ans-
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Pointers

In contrast to Web 1.0, what is the key function of Web 2.0? - ans-
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Web is the computing platformd d d d




What computing paradigm enforces stateless (no variable allowed) programming? - ans-
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Functional

What computing paradigm can solve a problem by describing the requirements, without writin
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g code in a step-wise fashion to solve the problem? - ans-logic
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What is the major improvement of structured programming languages over the earlier progra
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mming languages? - ans-Removing Goto statement from the language.
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What is a feature of object-oriented computing? - ans-encapsulation of states
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What programming languages better prepare you for leaning database query languages suc
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h as SQL and LINQ? - ans-Prolog and Scheme
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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 language characteristics impact the readability of the programs written in
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this language? - ans-Control structures, Syntax design, and Data Structures
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Given the following code, what is the expected value for z?
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#include <stdio.h> d




#define func(x, y) (x > y) ? y : x d d d d d d d d d




int main() d




{
int x = 10;
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int y = 9;
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int z = func(++x, y++);
d d d d d d




} - ans-10
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Explicit type conversion is commonly referred to as __________ . - ans-Casting.
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, If you like to see accurate debugging information, which of the following program processing
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would you recommend? - ans-Interpretationd d d dd




What is the main reason of applying two-
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step translation of high level programming language? - ans-One compiler for all machines
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Can the identifier "base_variable" be created from the following BNF ruleset?
d
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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> <identifier> - ans-No - d d d d d d dd d




there is an underscore in the identifier name that cannot be generated.
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ow many different identifiers can the following BNF ruleset generate?
d
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<char> ::= a | b | c | ... | x | y | z d d d d d d d d d d d d d d




<identifier> ::= <char> | <char> <identifier> - ans-More than 26. d d d d d d dd d d




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, for ( <init-expr>; <test-expr>; <increment-
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expr> ) {<statements>} , while (condition) do {statements;}
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Given this snippet of code in C, d d d d d d




char alpha = 'a'; d d d




int numeric = alpha + 10;
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which of the following statement is correct: - ans-
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Syntactically correct, but contextually incorrect. d d d d




What is "func" in this example? d d d d d d




#include <stdio.h> d




#define func(x, y) (x > y) ? y : x d d d d d d d d d




int main() d




{
int x = 10;
d d d d




int y = 9;
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int z = func(x, y);
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} - ans-A macro
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Which implementation of a function has potentially the best performance in terms of executio
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n speed? - ans-macro
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Given the following code, what is the expected value for z?
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#define func(x, y) (x > y) ? y++ : x++ d d d d d d d d d