Fastest way to Convert String to Binary?
Using std::bitset would work: Output:
c++
C++ Error: Type Name is Not Allowed
You can’t include the typename when calling a function. Change to:
C++ – No appropriate default constructor available
In contrast to C#, this declaration; …is an instantiation of the type Player, which means that by the time you’re assigning it inside the constructor, it has already been constructed without a parameter. What you need to do is to tell the class how to initialize player in what is called an initializer list that you append to the constructor … Read more
“Field has incomplete type” error
You are using a forward declaration for the type MainWindowClass. That’s fine, but it also means that you can only declare a pointer or reference to that type. Otherwise the compiler has no idea how to allocate the parent object as it doesn’t know the size of the forward declared type (or if it actually has … Read more
C++ variable has initializer but incomplete type?
You use a forward declaration when you need a complete type. You must have a full definition of the class in order to use it. The usual way to go about this is: 1) create a file Cat_main.h 2) move to Cat_main.h. Note that inside the header I removed using namespace std; and qualified string with std::string. 3) include this … Read more
How can I assign an array from an initializer list?
You cannot assign directly to an array after its declaration. Basically your code is the same as You have to either assign the value at declaration or use a loop (or std::copy) to assign elements. Since your array seems to be a member variable, you can also initialize it in the constructor initialization list:
Error: free(): invalid next size (fast):
It means that you have a memory error. You may be trying to free a pointer that wasn’t allocated by malloc (or delete an object that wasn’t created by new) or you may be trying to free/delete such an object more than once. You may be overflowing a buffer or otherwise writing to memory to which you shouldn’t be writing, causing heap corruption. Any … Read more
C++ Compiler Error C2280 “attempting to reference a deleted function” in Visual Studio 2013 and 2015
From [class.copy]/7, emphasis mine: If the class definition does not explicitly declare a copy constructor, a non-explicit one is declared implicitly. If the class definition declares a move constructor or move assignment operator, the implicitly declared copy constructor is defined as deleted; otherwise, it is defined as defaulted (8.4). The latter case is deprecated if the … Read more
Why would this give a Use of uninitialised value of size 8
The most likely cause of uninitialized value is that at least one of b->nextU or b->U that you are adding to delta_U is itself uninitialized. That is: You would like Valgrind to report when foo becomes uninitialized. Unfortunately, doing so produces too many “false positive” warnings to be practical. You can insert into your loop calls to VALGRIND_CHECK_MEM_IS_DEFINED (see Valgrind user manual), and Valgrind … Read more
C++ compile time error: expected identifier before numeric constant
You cannot do this: in a class outside of a method. You can initialize the data members at the point of declaration, but not with () brackets: Before C++11, you need to declare them first, then initialize them e.g in a contructor