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Chapter 7: Problem 23

If the size declarator of an array definition is omitted, C++ counts the number of items in the _________ to determine how large the array should be.

Short Answer

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Question: If the size declarator of an array definition is omitted, C++ counts the number of items in the ______ to determine how large the array should be. Answer: initialisation list

Step by step solution

01

Understanding Array in C++

In C++, an array is a collection of elements of similar datatype. It is a derived datatype in C++. An array is defined by specifying its name, type of elements it will store and the number of elements it can store (which is known as the size of the array).
02

Missing Size Declarator of an Array in C++

If the size declarator of an array definition is omitted in C++, it means that the size of the array hasn't been specified directly in the declaration. However, this does not necessarily lead to a compile error or a runtime error. The size of the array will be determined automatically by the compiler.
03

Determine the Size of Array Automatically

When the size declarator of an array definition is omitted in C++, the compiler counts the number of items in the initialisation list to determine how large the array should be. Initialisation list refers to the list of values that are assigned to the elements of the array at the time of declaration.
04

Filling in the Blank

The correct word to fill in the blank in the exercise statement is "initialisation list." Therefore, the complete statement is: "If the size declarator of an array definition is omitted, C++ counts the number of items in the initialisation list to determine how large the array should be."

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Most popular questions from this chapter

The vector data type is a(n) ______________ container.

Look at the following array definition. double sales[8][10]; How many rows does the array have? How many columns does the array have? How many elements does the array have? Write a statement that stores a number in the last column of the last row in the array.

Define a two-dimensional array of integers named grades. It should have 30 rows and 10 columns.

When defining a parameter variable to hold a single-dimensional array argument, you do not have to include the size declarator.

Consider the following array definition: int values[5] = { 4, 7, 6, 8, 2 }; What does each of the following statements display? cout << values[4] << endl; __________ cout << (values[2] + values[3]) << endl; __________ cout << ++values[1] << endl; __________
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