Tag: programming languages

Questions Related to programming languages

Given: class Titanic { public static void main(String[] args) { Boolean bl = true; boolean b2 = false; boolean b3 = true; if((bl & b2) | (b2 & b3) & b3) System.out.print("alpha "); if((bl = false) | (b1 & b3) | (bl | b2)) System.out.print("beta "}; } } What is the result?

technology programming languages

  1. beta

  2. alpha

  3. alpha beta

  4. Compilation fails

  5. No output is produced

  6. An exception is thrown at runtime

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Correct Option: E

AI Explanation

To answer this question, let's go through each option to understand why it is correct or incorrect:

Option A) beta - This option is incorrect because the code does not reach the second if statement, which is responsible for printing "beta".

Option B) alpha - This option is incorrect because the code does not reach the first if statement, which is responsible for printing "alpha".

Option C) alpha beta - This option is incorrect because the code does not reach either of the if statements, so no output is produced.

Option D) Compilation fails - This option is incorrect because the code is syntactically correct.

Option E) No output is produced - This option is correct because neither of the if statements evaluates to true, so no output is printed.

Option F) An exception is thrown at runtime - This option is incorrect because there are no exceptions thrown in the given code.

The correct answer is E. No output is produced. This option is correct because neither of the if statements evaluates to true, so no output is printed.

Given: class Feline { public static void main(String[] args) { Long x = 42L; Long y = 44L; System.out.print(" " + 7 + 2 + " "); System.out.print(foo() + x + 5 + " "); System.out.println(x + y + foo()); } static String foo() { return "foo"; } } What is the result?
technology programming languages

  1. 9 foo47 86foo

  2. 9 foo47 4244foo

  3. 9 foo425 86foo

  4. 9 foo425 4244foo

  5. 72 foo47 86foo

  6. 72 foo425 86foo

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Correct Option: F

Which of the following examples correctly defines the macro program Hex?
technology programming languages

  1. %macro hex(start=1, stop=10, incr=1); %local i; data null; %do i=&start to &stop by &incr; value=&i; put "Hexadecimal form of &i is " value hex6.; %end; run; %mend hex;

  2. %macro hex(start=1, stop=10, incr=1); %local i; data null; %do i=&start %to &stop %by &incr; value=&i; put "Hexadecimal form of &i is " value hex6.; %end; run; %mend hex;

  3. %macro hex(start=1, stop=10, incr=1); %local i; data null; %do i=&start to &stop by &incr; value=&i; put "Hexadecimal form of &i is " value hex6.; run; %mend hex;

  4. %macro hex(start=1, stop=10, incr=1); %local i; data null; %do i=&start to &stop by &incr; value=&i; put "Hexadeciaml form of &i is " value hex6.; %end run; %mend hex;

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Correct Option: B

%let x=5; %let y=10; %let a=%nrstr(%eval(&x + &y)); What is the output of the two put statement %put QCMPRES: %qcmpres(&a); %put CMPRES: %cmpres(&a);
technology programming languages

  1. QCMPRES: %eval(&x + &y) CMPRES: 15

  2. CMPRES: 15 QCMPRES: %eval(&x + &y)

  3. QCMPRES: 15 CMPRES: 15

  4. QCMPRES:%eval(&x+&y) CMPRES: 15

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Correct Option: A

STRIP(string) returns the same result as :

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  1. TRIMN(LEFT(string))

  2. TRIM(LEFT(string))

  3. TRIMN(RIGHT(string))

  4. TRIM(RIGHT(string))

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Correct Option: A

What will the following PROC CATALOG step do? proc catalog cat=mylib.sasmacr; contents; quit;
technology programming languages

  1. Copy the contents of the Sasmacr catalog to a temporary data set.

  2. List the contents of the Sasmacr catalog as output.

  3. Copy the contents of the output window to the Sasmacr catalog.

  4. none of the above

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Correct Option: B

data test ; x="Math A English B Physics A"; y=compress(x,'ABCD','k'); put y; run; The value of 'y' written in log is :
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  1. ABA

  2. Math A English B Physics A

  3. a A B A

  4. aABA

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Correct Option: A

The SYMPUT routine cannot
technology programming languages

  1. be used to assign a data set variable as a value to a macro variable.

  2. create a series of macro variables in one DATA step.

  3. automatically convert a numeric value to a character value when used to assign a value to a macro variable in a DATA step.

  4. be used to assign a numeric value to a macro variable in an SCL (SAS Component Language) program.

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Correct Option: D

According to the global symbol table shown here, what value will a reference to &&teach&crs resolve to? TEACH1 Hallis, Dr. George TEACH2 Wickam,Dr. Alice TEACH3 Forest,Mr. Peter CRS 3
technology programming languages

  1. &TEACH3

  2. TEACH3

  3. Forest, Mr. Peter

  4. none of the above

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Correct Option: C

Which of the following is false?
technology programming languages

  1. A %MACRO statement must always be paired with a %MEND statement.

  2. A macro definition can include macro variable references, but it cannot include SAS language statements.

  3. Only macro language statements are checked for syntax errors when the macro is compiled.

  4. Compiled macros are stored in a temporary SAS catalog by default.

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Correct Option: B