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How do I create a random alpha-numeric string in C++?
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Please use C++11 or boost random, we're in 2016 now
– Nikko
Jan 29 '16 at 13:23
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Is the pImpl idiom really used in practice?
I am reading the book "Exceptional C++" by Herb Sutter, and in that book I have learned about the pImpl idiom. Basically, the idea is to create a structure for the private objects of a class and dynamically allocate them to decrease the compilation time (and also hide the private implementatio...
What C++ Smart Pointer Implementations are available?
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C++03
std::auto_ptr - Perhaps one of the originals it suffered from first draft syndrome only providing limited garbage collection facilities. The first downside being that it calls delete upon destruction making them unacce...
What does 'const static' mean in C and C++?
... from other modules. Is this correct? If so, why would anyone use it in a C++ context where you can just make it private ?
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Accessing inactive union member and undefined behavior?
...nfusion is that C explicitly permits type-punning through a union, whereas C++ (c++11) has no such permission.
c11
6.5.2.3 Structure and union members
95) If the member used to read the contents of a union object is not the same as the member last used to
store a value in the object,...
Why should I not include cpp files and instead use a header?
So I finished my first C++ programming assignment and received my grade. But according to the grading, I lost marks for including cpp files instead of compiling and linking them . I'm not too clear on what that means.
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How do I return multiple values from a function in C?
...bVicktor: C does not have reference semantics at all (that is exclusive to C++), so everything is a value. The two pointers solution (#2) is passing copies of the pointers into a function, which getPair then dereferences. Depending on what you're doing (OP never clarified if this is actually a C que...
Macro vs Function in C
...olymorphic behavior, unintentional polymorphism may be difficult to avoid. C++ has a number of features such as templates to help create complex polymorphic constructs in a typesafe way without the use of macros; see Stroustrup's The C++ Programming Language for details.
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Smart pointers: who owns the object? [closed]
C++ is all about memory ownership - aka ownership semantics .
11 Answers
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Compiler error: memset was not declared in this scope
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You should include <string.h> (or its C++ equivalent, <cstring>).
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