pointers Archives - Page 5 of 6

Pointers vs. values in parameters and return values

In Go there are various ways to return a struct value or slice thereof. For individual ones I’ve seen: type MyStruct struct { ...

May 6, 2022
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What is array to pointer decay?

What is array to pointer decay? Is there any relation to array pointers? 11 Answers 11 It’s said that arrays “decay” into pointers. ...

May 5, 2022
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What are the barriers to understanding pointers and what can be done to overcome them? [closed]

Closed. This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so ...

May 5, 2022
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How many levels of pointers can we have?

How many pointers (*) are allowed in a single variable? Let’s consider the following example. int a = 10; int *p = &a; ...

May 5, 2022
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How does free know how much to free?

In C programming, you can pass any kind of pointer you like as an argument to free, how does it know the size ...

May 4, 2022
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C pointer to array/array of pointers disambiguation

What is the difference between the following declarations: int* arr1[8]; int (*arr2)[8]; int *(arr3...

May 3, 2022
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How do I use arrays in C++?

C++ inherited arrays from C where they are used virtually everywhere. C++ provides abstractions that are easier to use and less error-prone (std::vector<T> ...

May 3, 2022
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Typedef function pointer?

I’m learning how to dynamically load DLL’s but what I don’t understand is this line typedef void (*FunctionFunc)(); I have a few questions. ...

May 2, 2022
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What exactly is nullptr?

We now have C++11 with many new features. An interesting and confusing one (at least for me) is the new nullptr. Well, no ...

April 29, 2022
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What does “dereferencing” a pointer mean?

Please include an example with the explanation. 6 s 6

April 29, 2022
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