Test: Arrays - 1 - Computer Science Engineering (CSE) MCQ

This is the syntax to initialize an array in C.

The syntax to declare multidimensional array in java is either int[][] arr; or int arr[][];

LB refers to the lower bound of an array ( first index element of an array ) and UB refers to the upper bound of an array, that is the last index of an array. 

Let's take an example to understand this - 
Array - [2,6,7,0,15], where 2 is the lower bound and 15 is the upper bound element.

The K is the variable that holds the index of the array. While the LA is the name of the array. A loop is used to visit to traverse the elements from LB to UB.

The K holds the index of element 2 which is 0 and reaches index 4 of element 15.

The LA array using K traverse all the elements in the array. So, Option 2 will be the answer. 

Array:
An array is a group of data components that are stored in the same memory region at the same time. It is the most basic data structure, in which each data piece may be retrieved simply by its index number alone.

Array initialize:
Only square brackets [ ] must be used for declaring an array. The given {}, () are not useful for array initialization.
int arr[5]={11,12,15,16,19} is correct.
The above statement can store the 5 elements in a continuous manner. consider the array base address is 100.

Hence the correct answer is  int arr[5]={11,12,15,16,19}.

Trying to access an element beyond the limits of an array gives ArrayIndexOutOfBoundsException.

 Whenever a particular memory location is referred to, it is likely that the locations nearby are also referred, arrays are stored as contiguous blocks in memory, so if you want to access array elements, spatial locality makes it to access quickly.

An array is defined as the collection of similar types of data items stored at contiguous memory locations. Arrays are the derived data type in C programming language which can store the primitive type of data such as int, char, double, float, etc. C array is beneficial if you have to store similar elements.

int array[] = {2, 3, 4, 5}; This array storage be like, 

The above array at index I can be accessed by, a[i], i[a], *(a+i) or *(i+a) all the above representations all are equal and gives the i th index value.

printf(%d', 2[array]); So, it gives the 2nd  index value. i.e 4.

Hence the correct answer is 4.

Array name: A

To access 3rd element in an array A[2] or 2[A] is used.  Therefore Both A[2] and 2[A] represent the value 3

Arrays are of fixed size. If we insert elements less than the allocated size, unoccupied positions can’t be used again. Wastage will occur in memory.

char si [] = "India is great";

The above declaration is a dynamic allocation of array name si of character datatype.

Hence the correct answer is 15.