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Chapter 7: Problem 54

The subscript of the last element in a single-dimensional array is one less than the total number of elements in the array.

Short Answer

Expert verified
Answer: The subscript of the last element in a single-dimensional array is always one less than the total number of elements in the array.

Step by step solution

01

Understand Arrays

A single-dimensional array is a data structure that consists of a collection of elements, all of the same type, which can be accessed using an index or a subscript. The number of elements in the array is referred to as the "size" or "length" of the array. Each element is stored in a continuous memory location, and the index is used to reference each position. The first element's index in an array is 0.
02

Understand Indexing

The numbering system for arrays in programming languages usually starts with 0, meaning that the first element's index will be 0, the second element's index will be 1, and so on. The last element's index will be one less than the total number of elements present in the array, as the counting starts from 0.
03

Array Example

Let's consider an example to further clarify the concept: Suppose we have an array of length 5 (having 5 elements), with the following elements: Array: [10, 20, 30, 40, 50] In this case, the total number of elements in the array is 5. Let's see how indexing works for this array: - The first element (10) has an index of 0. - The second element (20) has an index of 1. - The third element (30) has an index of 2. - The fourth element (40) has an index of 3. - The last element (50) has an index of 4.
04

Conclusion

As we can see, the index of the last element in this example (50) is indeed one less than the total number of elements in the array, which is 5. This confirms that in a single-dimensional array, the subscript of the last element is always one less than the array's total number of elements.

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Most popular questions from this chapter

By using the same _________ for multiple arrays, you can build relationships betweenthe data stored in the arrays.

In a program you need to store the populations of 12 countries. A) Define two arrays that may be used in parallel to store the names of the countries and their populations. B) Write a loop that uses these arrays to print each country’s name and its population.

The _________ indicates the number of elements, or values, an array can hold.

Look at the following array definition. int numberArray[9][11]; Write a statement that assigns 145 to the first column of the first row of this array. Write a statement that assigns 18 to the last column of the last row of this array.

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.
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