C++ Archives - Page 57 of 68

Use ‘class’ or ‘typename’ for template parameters? [duplicate]

This question already has answers here: Closed 9 years ago. Possible Duplicate: C++ difference of keywords ‘typename’ and ‘class’ in templates When defining ...

April 30, 2022
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How do I declare a 2d array in C++ using new?

How do i declare a 2d array using new? Like, for a “normal” array I would: int* ary = new int...

April 29, 2022
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Undefined, unspecified and implementation-defined behavior

What is undefined behavior (UB) in C and C++? What about unspecified behavior and implementation-defined behavior? What is the difference between them? 9 ...

April 29, 2022
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What is the most effective way for float and double comparison?

What would be the most efficient way to compare two double or two float values? Simply doing this is not correct: bool CompareDoubles1 ...

April 29, 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 int argc, char *argv[] mean?

In many C++ IDE’s and compilers, when it generates the main function for you, it looks like this: int main(int argc, char *argv) ...

April 29, 2022
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When should I really use noexcept?

The noexcept keyword can be appropriately applied to many function signatures, but I am unsure as to when I should consider using it ...

April 29, 2022
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Difference between static and shared libraries?

What is the difference between static and shared libraries? I use Eclipse and there are several project types including Static Libraries and Shared ...

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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What are Aggregates and PODs and how/why are they special?

This FAQ is about Aggregates and PODs and covers the following material: What are Aggregates? What are PODs (Plain Old Data)? How are ...

April 29, 2022
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