Creation of Dynamic Array of Dynamic Objects in C++
If you are using c++ then you shouldn’t reinvent the wheel, just use vectors: Edit: I didn’t understand your question, if you just want to have and array of arrays allocated on the heap just use:
C++
A good and basic implementation of BigInt class in C++
Here’s one. I haven’t used it, but it doesn’t look too complex, and it was the first result when I googled “bigint c++”.
Multi-character constant warnings
According to the standard (§6.4.4.4/10) The value of an integer character constant containing more than one character (e.g., ‘ab’), […] is implementation-defined. This is valid ISO 9899:2011 C. It compiles without warning under gcc with -Wall, and a “multi-character character constant” warning with -pedantic. From Wikipedia: Multi-character constants (e.g. ‘xy’) are valid, although rarely useful … Read more
Generate SHA256 in c++
I would recommend the free Crypto++ library. Here’s a sample for HMAC.
What is the most popular general purpose C++ framework?
The STL and Boost are both pretty popular, and they’re pretty much the epitome of “general purpose”.
why is string not declared in scope
You have to use std::string since it’s in the std namespace.
Program received signal SIGSEGV, Segmentation fault
If you are on Linux, try running valgrind. You just compile with -g (with gcc), and then run your program with valgrind in front: Unlike the GCC solutions, which tell you when the segfault occurs, valgrind usually tells you exactly when the first memory corruption occurs, so you can catch the problem much closer to its source. PS. It rhymes … Read more
C++ Convert string (or char*) to wstring (or wchar_t*)
How would i assign the contents of s to ws? Searched google and used some techniques but they can’t assign the exact content. The content is distorted.
error C2679: binary ‘<<' : no operator found which takes a right-hand operand of type 'std::string' (or there is no acceptable conversion)
You forgot to #include <string> using std::string without including it’s header works on some compilers that indirectly import parts of <string> into their <iostream> or other headers but that’s not standard and shouldn’t be relied upon. Also they often break when you try to output a string since they only included a part of the … Read more
c++ “Incomplete type not allowed” error accessing class reference information (Circular dependency with forward declaration)
If you will place your definitions in this order then the code will be compiled The definition of function doSomething requires the complete definition of class Ball because it access its data member. In your code example module Player.cpp has no access to the definition of class Ball so the compiler issues an error.