• Question
• # Which of the following is the correct way to define and initialise an array of 4 integers? `int[] a = {25, 30, 40, 5};` ```int[] a; a = new int[3]; a[0] = 25; a[1] = 30; a[2] = 40; a[3] = 5;``` ```int[] a; a = new int{25, 30, 40, 5};``` ```int[] a; a = new int[4]{25, 30, 40, 5};``` ```int[] a; a = new int[4]; a[0] = 25; a[1] = 30; a[2] = 40; a[3] = 5;```

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

• 1, 4, 5

## Search Results

• 1. 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}};```

• Options
• A. 1, 2 , 3
• B. 1, 3
• C. 2, 3
• D. 2, 4, 5
• E. 4, 5
• 2. How will you complete the foreach loop in the C#.NET code snippet given below such that it correctly prints all elements of the array a?

```    int[][]a = new int[2][];
a[0] = new int[4]{6, 1 ,4, 3};
a[1] = new int[3]{9, 2, 7};
foreach (int[ ] i in a)
{
Console.Write(j + " ");
Console.WriteLine();
}```

• Options
• A. foreach (int j = 1; j < a(0).GetUpperBound; j++)
• B. foreach (int j = 1; j < a.GetUpperBound (0); j++)
• C. foreach (int j in a.Length)
• D. foreach (int j in i)
• E. foreach (int j in a.Length -1)
• 3. Which of the following statements is correct about the array declaration given below?

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

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

`int[ , ] intMyArr = {{7, 1, 3}, {2, 9, 6}};`
1. intMyArr represents rectangular array of 2 rows and 3 columns.
2. intMyArr.GetUpperBound(1) will yield 2.
3. intMyArr.Length will yield 24.
4. intMyArr represents 1-D array of 5 integers.
5. intMyArr.GetUpperBound(0) will yield 2.

• Options
• A. 1, 2
• B. 2, 3
• C. 2, 5
• D. 1, 4
• E. 3, 4
• 5. Which of the following statements are correct about static functions?

1. Static functions can access only static data.
2. Static functions cannot call instance functions.
3. It is necessary to initialize static data.
4. Instance functions can call static functions and access static data.
5. this reference is passed to static functions.

• Options
• A. 1, 2, 4
• B. 2, 3, 5
• C. 3, 4
• D. 4, 5
• E. None of these
• 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);```

• Options
• A. 20
• B. 4
• C. 18
• D. 10
• E. 5
• 7. 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};```

• Options
• 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].
• 8. Which of the following statements is correct about the C#.NET code snippet given below?

`    int[] intMyArr = {11, 3, 5, 9, 4}; `

• Options
• A. intMyArr is a reference to an object of System.Array Class.
• B. intMyArr is a reference to an object of a class that the compiler derives from System.Array Class.
• C. intMyArr is a reference to an array of integers.
• D. intMyArr is a reference to an object created on the stack.
• E. intMyArr is a reference to the array created on the stack.
• 9. If a is an array of 5 integers then which of the following is the correct way to increase its size to 10 elements?

• Options
• A.
``````int[] a = new int[5];
int[] a = new int[10];``````
• B.
``````int[] a = int[5];
int[] a = int[10];``````
• C.
``````int[] a = new int[5];
a.Length = 10 ;``````
• D.
``````int[] a = new int[5];
a = new int[10];``````
• E.
``````int[] a = new int[5];
a.GetUpperBound(10);``````
• 10. Which one of the following statements is correct?

• Options
• A. Array elements can be of integer type only.
• B. The rank of an Array is the total number of elements it can contain.
• C. The length of an Array is the number of dimensions in the Array.
• D. The default value of numeric array elements is zero.
• E. The Array elements are guaranteed to be sorted.