Arrays And Strings In C Sharp — Part 1 MCQs with Explanations

The question asks which method of the String class in C# is used to extract all characters from a string. The correct method is ToCharArray() , which converts the entire string into an array of characters. Syntax: char[] ToCharArray() This method returns a character array containing all the characters of the string in the same sequence. Example: string myString = "Hello"; char[] chars = myString.ToCharArray(); After execution, chars will contain: ['H', 'e', 'l', 'l', 'o']. Option A: CHARAT() – Invalid in C#. It belongs to Java and has incorrect casing. Option B: Remove() – Used to delete a portion of a string, not to extract characters. Option C: charAt() – Also a Java method, not part of C#. Option D: Replace() – Used to replace characters or substrings, not to extract them. Therefore, the correct and updated answer is Option E: ToCharArray() .

string[] colors is the correct answer to “What is the correct way to declare a string array in C#”. This question is standard in competitive examination syllabi for Arrays And Strings In C Sharp.

numbers[0] is the correct answer to “How do you access the first element of an array named 'numbers' in C#”. This question is standard in competitive examination syllabi for Arrays And Strings In C Sharp.

int[] numbers = {1, 2, 3} is the correct answer to “What is the correct way to initialize an array of integers with values {1, 2, 3} in C#”. This question is standard in competitive examination syllabi for Arrays And Strings In C Sharp.

The length of an array cannot be changed is the correct answer to “Which of the following statements is true regarding arrays in C#”. This question is standard in competitive examination syllabi for Arrays And Strings In C Sharp.

values.Length is the correct answer to “How do you find the number of elements in an array named 'values' in C#”. This question is standard in competitive examination syllabi for Arrays And Strings In C Sharp.

int[,] matrix = new int[3,3] is the correct answer to “What is the correct syntax to declare and initialize a 2D array in C# with dimensions 3x3”. This question is standard in competitive examination syllabi for Arrays And Strings In C Sharp.

Array.Sort() is the correct answer to “Which method in C# is used to sort the elements of an array in ascending order”. This question is standard in competitive examination syllabi for Arrays And Strings In C Sharp.

The total number of elements in the array is the correct answer to “What does the 'Length' property of an array in C# return”. This question is standard in competitive examination syllabi for Arrays And Strings In C Sharp.

string[] names = new string[5] is the correct answer to “What is the correct way to declare an array of strings with 5 elements in C#”. This question is standard in competitive examination syllabi for Arrays And Strings In C Sharp.

values[values.Length - 1] is the correct answer to “How do you access the last element of an array named 'values' in C#”. This question is standard in competitive examination syllabi for Arrays And Strings In C Sharp.

Concat() is the correct answer to “Which of the following methods is used to concatenate strings in C#”. This question is standard in competitive examination syllabi for Arrays And Strings In C Sharp.

Banana is the correct answer to “What is the result of the following code in C#: string[] fruits = {"Apple", "Banana", "Orange"}; Console.WriteLine(fruits[1]);”. This question is standard in competitive examination syllabi for Arrays And Strings In C Sharp.

Array.IndexOf() is the correct answer to “Which method in C# is used to find the index of a specific element in an array”. This question is standard in competitive examination syllabi for Arrays And Strings In C Sharp.

int[][] jaggedArray = new int[3][] is the correct answer to “What is the correct way to declare and initialize a jagged array in C#”. This question is standard in competitive examination syllabi for Arrays And Strings In C Sharp.

Strings are immutable is the correct answer to “Which of the following statements is true regarding strings in C#”. This question is standard in competitive examination syllabi for Arrays And Strings In C Sharp.

int[] is the correct answer to “In C#, which keyword is used to declare an array”. This question is standard in competitive examination syllabi for Arrays And Strings In C Sharp.

int[] numbers = new int[5] is the correct answer to “What is the correct syntax to initialize an array in C#”. This question is standard in competitive examination syllabi for Arrays And Strings In C Sharp.

0 is the correct answer to “What is the index of the first element in an array in C#”. This question is standard in competitive examination syllabi for Arrays And Strings In C Sharp.

Length is the correct answer to “Which method is used to find the length of an array in C#”. This question is standard in competitive examination syllabi for Arrays And Strings In C Sharp.

0 is the correct answer to “In C#, what is the default value of an uninitialized element in an integer array”. This question is standard in competitive examination syllabi for Arrays And Strings In C Sharp.

numbers[2] is the correct answer to “What is the correct way to access the third element in an array named numbers in C#”. This question is standard in competitive examination syllabi for Arrays And Strings In C Sharp.

string[] colors = {"Red", "Green", "Blue"} is the correct answer to “What is the correct way to declare a string array named colors with three elements in C#”. This question is standard in competitive examination syllabi for Arrays And Strings In C Sharp.

Array.Copy() is the correct answer to “In C#, which method is used to copy elements from one array to another”. This question is standard in competitive examination syllabi for Arrays And Strings In C Sharp.

Declares an array with three elements is the correct answer to “What is the result of the expression string[] names = {"John", "Alice", "Bob"}; in C#”. This question is standard in competitive examination syllabi for Arrays And Strings In C Sharp.

numbers.Length is the correct answer to “What is the correct way to access the length of an array named numbers in C#”. This question is standard in competitive examination syllabi for Arrays And Strings In C Sharp.

int[][] jaggedArray is the correct answer to “What is the correct way to declare a jagged array in C#”. This question is standard in competitive examination syllabi for Arrays And Strings In C Sharp.

Array.Sort() is the correct answer to “In C#, which method is used to sort the elements of an array”. This question is standard in competitive examination syllabi for Arrays And Strings In C Sharp.

int[,] matrix is the correct answer to “What is the correct syntax to declare a multidimensional array in C#”. This question is standard in competitive examination syllabi for Arrays And Strings In C Sharp.

Splits the string into an array of substrings based on a delimiter is the correct answer to “What does the Split() method do when applied to a string in C#”. This question is standard in competitive examination syllabi for Arrays And Strings In C Sharp.

Join() is the correct answer to “In C#, which method is used to convert an array to a string representation”. This question is standard in competitive examination syllabi for Arrays And Strings In C Sharp.

numbers[numbers.Length - 1] is the correct answer to “What is the correct way to access the last element in an array named numbers in C#”. This question is standard in competitive examination syllabi for Arrays And Strings In C Sharp.

Concat() is the correct answer to “Which method is used to concatenate two or more strings in C#”. This question is standard in competitive examination syllabi for Arrays And Strings In C Sharp.

int[,] matrix = new int[3, 4] is the correct answer to “What is the correct syntax to declare a 2D array with 3 rows and 4 columns in C#”. This question is standard in competitive examination syllabi for Arrays And Strings In C Sharp.

Declares an array with three elements is the correct answer to “What is the result of the expression string[] fruits = {"Apple", "Banana", "Orange"}; in C#”. This question is standard in competitive examination syllabi for Arrays And Strings In C Sharp.

IndexOf() is the correct answer to “In C#, which method is used to find the index of the first occurrence of a specified value in an array”. This question is standard in competitive examination syllabi for Arrays And Strings In C Sharp.

string[] colors = new string[] {"Red", "Green", "Blue"} is the correct answer to “What is the correct way to declare and initialize a string array with three elements in C#”. This question is standard in competitive examination syllabi for Arrays And Strings In C Sharp.

text.Length is the correct answer to “In C#, what is the correct way to access the length of a string named text”. This question is standard in competitive examination syllabi for Arrays And Strings In C Sharp.

-1 is the correct answer to “What does the IndexOf() method return if the specified value is not found in an array in C#”. This question is standard in competitive examination syllabi for Arrays And Strings In C Sharp.

Reverses the order of elements in the array is the correct answer to “What is the purpose of the Reverse() method when applied to an array in C#”. This question is standard in competitive examination syllabi for Arrays And Strings In C Sharp.