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programming languages Online Quiz - 104

Description: programming languages Online Quiz - 104
Number of Questions: 20
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Tags: programming languages
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What will happen when you attempt to compile and run the following code? int Output = 10; boolean b1 = false; if((b1 == true) && ((Output += 10) == 20)) { System.out.println("We are equal " + Output); } else { System.out.println("Not equal! " + Output); }

  1. Compilation and output of "Not equal! 10".

  2. Compilation and output of "Not equal! 20".

  3. Compilation and output of "We are equal 10".

  4. Compilation error, attempting to perform binary comparison on logical data type.


Correct Option: A

Anonymous Types is a feature of LINQ

  1. True

  2. False


Correct Option: B

List Names = new List(); Names.Add("A"); Names.Add("B"); Names.Add("C"); var res = Names.Where(n => n == "D"); res is the type of

  1. List

  2. IEnumerable

  3. List

  4. IEnumerable


Correct Option: B

List Names = new List(); Names.Add("A"); Names.Add("B"); Names.Add("C"); var res = Names.Where(n => n == "D"); if (res == null) Console.WriteLine("res is null"); else Console.WriteLine("res is not null"); Console.Read(); What would be printed?

  1. res is null

  2. res is not null

  3. Run time error

  4. None of the above


Correct Option: B

Features of LINQ

  1. Querying of in-memory collections

  2. Abstraction layer of data sources

  3. Object and Collection Initializers

  4. Lambda expressions


Correct Option: A,B,C

Features of LINQ

  1. Querying of in-memory collections

  2. Abstraction layer of data sources

  3. Object and Collection Initializers

  4. Lambda expressions


Correct Option: A,B,C

In which version of .Net framework LINQ has been introduced

  1. 2.0

  2. 3.0

  3. 3.5

  4. 4.0


Correct Option: C

LINQ is abbreviation of

  1. Language Integrated Query

  2. Language Independent Query

  3. Language Interrelated Query

  4. None of the above


Correct Option: A

Integer i1=10; Integer i2=10; (i1.equals(i2++))-->result is

  1. true

  2. false

  3. compilation error

  4. exception thrown at runtime


Correct Option: B

String s1=new String("abc"); String s2=new String("abc"); (s1==s2)-->result is

  1. true

  2. false

  3. compilation error

  4. exception thrown at runtime


Correct Option: B

What is the result os this String s1="hi"; String s2="hi"; (s1==s2)-->returns

  1. true

  2. false

  3. compilation error

  4. exception thrown at runtime


Correct Option: A

What is the result of this Integer i1=10; int i2=10; (i1==i2)-->result is

  1. True

  2. False


Correct Option: A

What is result of the question Integer i1=10; Integer i2=10; (i1!=i2)-->result is

  1. True

  2. False


Correct Option: A

What is the result Integer i1=10; Integer i2=10; (i1==i2)-->result of this

  1. True

  2. False


Correct Option: A

Print the output of this program main() { int k = 5; if (++k < 5 && k++/5 || ++k <= 8); printf("%d\n", k); }

  1. 5

  2. 7

  3. 8

  4. garbage value


Correct Option: B

what is the output? int a = 400; void main() { int b; b=(400 * 400)/ a ; printf("%d",b); }

  1. compilation error

  2. garbage value

  3. 400

  4. 1


Correct Option: B

what is the output of the programme? #define ABC 20 #define XYZ 10 #define XXX ABC - XYZ void main() { int a; a = XXX * 10; printf("%d ", a); }

  1. 20

  2. 10

  3. 100

  4. -80


Correct Option: D

What is the value of y at the end of main? const int x = 5; int main(int argc, char** argv) { int x[x]; int y = sizeof(x) / sizeof(int); return 0; }

  1. 0

  2. 5

  3. undefined

  4. 2


Correct Option: B

In namespace foo, the function bar can access the variable x also declared in namespace foo? #include namespace foo { void bar() { x++; } int x; } int main(int argc, char** argv) { return 0; }

  1. True

  2. False


Correct Option: B

A function call is always an rvalue. True or false?

  1. True

  2. False


Correct Option: B
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