C Arrays and Pointers

What is the syntax for declaring an array in C?

• data_type array_name = array_size;

• data_type array_name[array_size];

• data_type array_name[array_size]

• array_name[array_size] data_type;

• array_name = data_type[array_size];

How do you initialize an array in C?

• int arr[5] = {1, 2, 3, 4, 5};

• int arr[] = {1, 2, 3, 4, 5};

• int arr[] = {1, 2, 3, 4, 5};

• int arr[5] = {1, 2, 3, 4, 5, 6};

Explain the concept of multi-dimensional arrays in C.

• In C, multi-dimensional arrays are created by using pointers exclusively

• Multi-dimensional arrays in C are declared by specifying the number of columns only

• In C, multi-dimensional arrays are declared by specifying the number of rows and columns, such as int arr[3][4]; to create a 3x4 array. Elements are accessed using indices for both rows and columns, like arr[1][2] to access the element in the second row and third column.

• Elements in multi-dimensional arrays are accessed using a single index in C

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

• One-dimensional arrays can only store one type of data

• Multi-dimensional arrays are always rectangular in shape

• One-dimensional arrays are always faster than multi-dimensional arrays

• The main difference is in the way elements are organized spatially.

How do you access elements in a multi-dimensional array in C?

• array[i][k]

• array[j][i]

• array[i, j]

• array[i][j]

Can an array in C have a mix of data types?

• Maybe

• No

• Sometimes

• Yes

What is the relationship between arrays and pointers in C?

• Arrays in C are always stored in a contiguous memory block

• Arrays in C cannot be accessed using pointers

• Pointers in C are not related to arrays

• Arrays in C can be accessed using pointers, where the array name acts as a pointer to the first element of the array.

How do you pass an array to a function in C?

• Declare the function parameter as an array type

• Convert the array to a string before passing

• Use a struct to encapsulate the array

• Pass the array as a pointer to the first element

Explain the concept of pointer arithmetic in C arrays.

• Pointer arithmetic in C arrays allows for easy navigation and manipulation of array elements by directly accessing memory addresses.

• Pointer arithmetic in C arrays is used to perform string manipulation operations.

• Pointer arithmetic in C arrays involves using complex mathematical formulas to access array elements.

• Pointer arithmetic in C arrays allows for automatic resizing of arrays based on memory usage.

What is the significance of the sizeof operator in C arrays?

• The sizeof operator in C arrays is used to determine the size of the array in bytes.

• The sizeof operator in C arrays calculates the sum of the elements

• The sizeof operator in C arrays determines the data type of the elements

• The sizeof operator in C arrays is used to access elements in the array