C# Programming - Arrays

Exercise :: Arrays - General Questions

  • Arrays - General Questions
6. 

Which of the following is the correct output of the C#.NET code snippet given below?

    int[ , , ] a = new int[ 3, 2, 3 ]; 
    Console.WriteLine(a.Length);

A. 20
B. 4
C. 18
D. 10
E. 5

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.

7. 

Which of the following statements are correct about arrays used in C#.NET?

  1. Arrays can be rectangular or jagged.
  2. Rectangular arrays have similar rows stored in adjacent memory locations.
  3. Jagged arrays do not have an access to the methods of System.Array Class.
  4. Rectangular arrays do not have an access to the methods of System.Array Class.
  5. Jagged arrays have dissimilar rows stored in non-adjacent memory locations.

A. 1, 2
B. 1, 3, 5
C. 3, 4
D. 1, 2, 5
E. 4, 5

Answer: Option D

Explanation:

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8. 

Which of the following statements are correct about the C#.NET code snippet given below?

   int[][]intMyArr = new int[2][]; 
   intMyArr[0] = new int[4]{6, 1, 4, 3}; 
   intMyArr[1] = new int[3]{9, 2, 7};

A. intMyArr is a reference to a 2-D jagged array.
B. The two rows of the jagged array intMyArr are stored in adjacent memory locations.
C. intMyArr[0] refers to the zeroth 1-D array and intMyArr[1] refers to the first 1-D array.
D. intMyArr refers to intMyArr[0] and intMyArr[1].
E. intMyArr refers to intMyArr[1] and intMyArr[2].

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.

9. 

Which of the following are the correct ways to define an array of 2 rows and 3 columns?

  1. int[ , ] a;
    a = new int[2, 3]{{7, 1, 3},{2, 9, 6}};
  2. int[ , ] a;
    a = new int[2, 3]{};
  3. int[ , ] a = {{7, 1, 3}, {2, 9,6 }};
  4. int[ , ] a;
    a = new int[1, 2];
  5. int[ , ] a;
    a = new int[1, 2]{{7, 1, 3}, {2, 9, 6}};

A. 1, 2 , 3
B. 1, 3
C. 2, 3
D. 2, 4, 5
E. 4, 5

Answer: Option B

Explanation:

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10. 

Which of the following statements is correct about the array declaration given below?

   int[][][] intMyArr = new int[2][][];

A. intMyArr refers to a 2-D jagged array containing 2 rows.
B. intMyArr refers to a 2-D jagged array containing 3 rows.
C. intMyArr refers to a 3-D jagged array containing 2 2-D jagged arrays.
D. intMyArr refers to a 3-D jagged array containing three 2-D jagged arrays.
E. intMyArr refers to a 3-D jagged array containing 2 2-D rectangular arrays.

Answer: Option C

Explanation:

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