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Chapter 10: Problem 17

Look at the following array definition. \\[\text { int numbers }[1]=\\{2,4,6,8,10\\}\\] What will the following statement display? cout \( < < \star(\text { numbers }+3)<<\) end 1

Short Answer

Expert verified
Answer: The output of the given statement is 8.

Step by step solution

01

Understanding array notation and elements

First, we need to understand the array definition that is given: \\[\text { int numbers }[1]=\\{2,4,6,8,10\\}\\] This creates an array called 'numbers' with 5 elements: 2, 4, 6, 8, and 10. Note that the indexing of an array in C++ starts with 0, i.e., numbers[0] represents the first element in the array,(numbers[1] represents the second, and so on.
02

Interpreting the given statement

The given statement is: cout \( < < \star(\text { numbers }+3)<<\) end 1 Let's break down this statement into its components: 1. `numbers`: This is the given array. 2. `numbers + 3`: This performs pointer arithmetic, adding 3 to the memory address of the first element of the 'numbers' array. 3. `\star (numbers + 3)`: The * symbol is a dereference operator in C++, which gets the value stored at a memory address. Here, it retrieves the value located at the memory address (numbers + 3). 4. `cout << ...`: This part of the statement prints the result obtained from the preceding steps.
03

Computing the output

Now, let's compute the output of the given statement step by step: 1. 'numbers' refers to the memory address of the first element in the array: 2. 2. When we add 3 to the address of the first element, it points to the fourth element in the array, which is 8. 3. The dereference operator `\star` retrieves the value stored at that memory address: 8. 4. Finally, `cout << ...` prints the result, which is 8. The given statement will display '8' as the output.

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