C++ Arrays Quiz

What is an array in C++?

• A collection of variables with different types

• A class with multiple constructors

• A variable that can store multiple values of the same type

• A type of loop

What does the following declaration do? int tests[5];

• Creates 6 integer variables

• Allocates memory for 5 integers

• Creates 5 functions

• Declares 5 arrays

What is the subscript of the first element in an array?

• 1

• -1

• 0

• Depends on the compiler

How much memory does int tests[5]; use if each int takes 4 bytes?

• 5 bytes

• 10 bytes

• 20 bytes

• 25 bytes

Which statement accesses the third element in int tests[5];?

• tests(2)

• tests[3]

• tests[2]

• tests.3

What is true about the size declarator in an array?

• It must be a float

• It specifies the number of characters

• It shows how many elements the array can hold

• It cannot be a constant

Which of the following is a valid array declaration using a constant?

• const int SIZE = 5; int data(SIZE);

• int SIZE = 5; data[SIZE];

• const int SIZE = 5; int data[SIZE];

• int data[];

What happens if you try to use an array name directly in cout highest)

What should you do if the number of array elements is unknown in advance?

• Declare it without size

• Use dynamic memory

• Make it large and use a counter

• Use a char array

How can you compare two arrays for equality?

• if (array1 == array2)

• Use strcmp()

• Compare each element one by one

• Use equals() method