Arrays and Strings in C Sharp MCQ question and answer with solution | C# Program MCQs

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11.
Which of the following methods is used to concatenate strings in C#?

A. Merge()

B. Join()

C. Concat()

D. Add()

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12.
What is the result of the following code in C#: string[] fruits = {"Apple", "Banana", "Orange"}; Console.WriteLine(fruits[1]);

A. Apple

B. Orange

C. Error

D. Banana

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13.
Which method in C# is used to find the index of a specific element in an array?

A. Array.FindIndex()

B. Array.IndexOf()

C. Array.Search()

D. Array.Position()

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14.
What is the correct way to declare and initialize a jagged array in C#?

A. int[][] jaggedArray = new int[3][];

B. int[][] jaggedArray = new int[][];

C. int[][] jaggedArray = new int[3][3];

D. jaggedArray[][] = new int[3][];

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15.
Which of the following statements is true regarding strings in C#?

A. Strings are not supported in C#

B. Strings can be resized dynamically

C. Strings can be modified directly

D. Strings are immutable

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16.
In C#, which keyword is used to declare an array?

A. array

B. int[]

C. Array

D. var[]

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17.
What is the correct syntax to initialize an array in C#?

A. int numbers[] = {1, 2, 3, 4, 5};

B. int[5] numbers;

C. int[] numbers = new int[5];

D. int[5] numbers = {1, 2, 3, 4, 5};

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18.
What is the index of the first element in an array in C#?

A. 1

B. 0

C. -1

D. First

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19.
Which method is used to find the length of an array in C#?

A. Length()

B. Size()

C. Count()

D. Length

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20.
In C#, what is the default value of an uninitialized element in an integer array?

A. -1

B. 0

C. null

D. None of the above

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Arrays and Strings in C Sharp MCQ question and answer with solution | C# Program MCQs

11. Which of the following methods is used to concatenate strings in C#?

Answer & Solution

12. What is the result of the following code in C#: string[] fruits = {"Apple", "Banana", "Orange"}; Console.WriteLine(fruits[1]);

Answer & Solution

13. Which method in C# is used to find the index of a specific element in an array?

Answer & Solution

14. What is the correct way to declare and initialize a jagged array in C#?

Answer & Solution

15. Which of the following statements is true regarding strings in C#?

Answer & Solution

16. In C#, which keyword is used to declare an array?

Answer & Solution

17. What is the correct syntax to initialize an array in C#?

Answer & Solution

18. What is the index of the first element in an array in C#?

Answer & Solution

19. Which method is used to find the length of an array in C#?

Answer & Solution

20. In C#, what is the default value of an uninitialized element in an integer array?

Answer & Solution

Read More Section(Arrays and Strings in C Sharp)

11.
Which of the following methods is used to concatenate strings in C#?

12.
What is the result of the following code in C#: string[] fruits = {"Apple", "Banana", "Orange"}; Console.WriteLine(fruits[1]);

13.
Which method in C# is used to find the index of a specific element in an array?

14.
What is the correct way to declare and initialize a jagged array in C#?

15.
Which of the following statements is true regarding strings in C#?

16.
In C#, which keyword is used to declare an array?

17.
What is the correct syntax to initialize an array in C#?

18.
What is the index of the first element in an array in C#?

19.
Which method is used to find the length of an array in C#?

20.
In C#, what is the default value of an uninitialized element in an integer array?