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Chapter 7: Problem 6

Look at the following array definition. \\[\text { int numbers }[5]=\\{1,2,3\\}\\] What value is stored in numbers [ 2 ]? What value is stored in numbers [ \(4] ?\)

Short Answer

Expert verified
Answer: numbers[2] = 3; numbers[4] = garbage value (since it is uninitialized)

Step by step solution

01

Identify the required elements in the array

Find the elements at positions 2 and 4 in the array. Note that indexing in C and C++ starts from 0.
02

Find the value of numbers[2]

The value at index 2 is already given in the array definition, which is 3. So, numbers[2] = 3.
03

Determine the value of uninitialized elements in the array

In C or C++, uninitialized elements can have garbage values unless they are explicitly set to a specific value during declaration. For example, \\[ \text{int numbers\_with\_zeros}[5] = \\{ 0 \\}; \\] would initialize all elements to 0.
04

Find the value of numbers[4]

The value at index 4 is not given in the array definition and has not been initialized. Therefore, numbers[4] contains a garbage value. So, the final answers are: - numbers[2] = 3 - numbers[4] = garbage value (since it is uninitialized)

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Most popular questions from this chapter

T F Subscript numbers may be stored in variables.

T F When an array is passed to a function, the function has access to the original array.

When you pass an array name as an argument to a function, what is actually being passed?

T F If you add a value to a vector that is already full, the vector will automatically increase its size to accommodate the new value.

C++ has no array _________ checking, which means you can inadvertently store data past the end of an array.
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