MCQ IN COMPUTER SCIENCE & ENGINEERING

COMPUTER SCIENCE AND ENGINEERING

DATA STRUCTURES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is meant by ‘declaring’ an array?
A
Create an array in a program, specifying its name and size
B
creating a program, specifying its size
C
create a program, specifying its name
D
create a program
Explanation: 

Detailed explanation-1: -An “array declaration” names the array and specifies the type of its elements. It can also define the number of elements in the array. A variable with array type is considered a pointer to the type of the array elements.

Detailed explanation-2: -Arrays are used to store multiple values in a single variable, instead of declaring separate variables for each value. To create an array, define the data type (like int ) and specify the name of the array followed by square brackets [].

Detailed explanation-3: -There are two ways you can declare and initialize an array in Java. The first is with the new keyword, where you have to initialize the values one by one. The second is by putting the values in curly braces.

Detailed explanation-4: -An array is a collection of elements of the same type placed in contiguous memory locations that can be individually referenced by using an index to a unique identifier. Five values of type int can be declared as an array without having to declare five different variables (each with its own identifier).

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