Exploring C# Arrays and For Statements

What is the syntax for a for loop in C#?

• for (i = 0; i < n; i++) { /* code to execute */ }

• for (int i = 0; i < n; i++) { code to execute }

• for (int i = 0; i < n; i++) { }

• for (int i = 0; i < n; i++) { /* code to execute */ }

How do you declare an array in C#?

• int numbers = new int[];

• int[] numbers; or int[] numbers = new int[5];

• int numbers[] = new int[5];

• array numbers int[];

What is the purpose of the 'length' property in an array?

• The 'length' property indicates the number of elements in an array.

• The 'length' property stores the last element of the array.

• The 'length' property defines the maximum size of an array.

• The 'length' property is used to sort the elements in an array.

How can you iterate through an array using a for loop?

• for (int i = 0; i < array.length; i++) { // access i[array] }

• for (int i = 1; i <= array.length; i++) { // access array[i] }

• for (int i = 0; i < array.length; i++) { // access array[i] }

• for (int i = 0; i < array.length; i += 2) { // access array[i] }

What happens if you try to access an index outside the bounds of an array?

• The array will expand to accommodate the index.

• Accessing an out-of-bounds index returns a default value.

• Accessing an out-of-bounds index results in an error or undefined behavior.

• The program will automatically fix the index.

Can you initialize an array with values at the time of declaration?

• Only objects can be initialized with values.

• Yes

• No, arrays can only be declared empty.

• You can only initialize arrays after declaration.

What is the difference between a one-dimensional and a multi-dimensional array?

• A one-dimensional array can store multiple data types, while a multi-dimensional array can only store one type.

• A one-dimensional array is always larger than a multi-dimensional array.

• A one-dimensional array has a single index for access, while a multi-dimensional array uses multiple indices.

• A one-dimensional array is represented as a matrix, while a multi-dimensional array is a single line of data.

How do you declare an array of strings in C#?

• string[] myArray = string[5];

• string[] myArray = new array[5];

• string[] myArray = new string[5];

• string myArray = new string[5];

What is the output of the following code: int[] arr = {1, 2, 3}; Console.WriteLine(arr[1]);?

• 3

• 4

• 2

• 1

How can you use a for loop to find the maximum value in an array?

• max_value = arr[0]; for (i = 1; i < arr.length; i++) { if (arr[i] > max_value) { max_value = arr[i]; } }

• max_value = arr[0]; for (i = 1; i < arr.length; i++) { if (arr[i] == max_value) { continue; } }

• max_value = arr[0]; for (i = 0; i <= arr.length; i++) { if (arr[i] < max_value) { max_value = arr[i]; } }

• max_value = arr[0]; for (i = 1; i < arr.length; i++) { max_value = arr[i]; }