I was looking at my C++ textbook at an example of a Linked List function for inserting a new node in the list which is below…. Void NumberList::insertNode(double num) { ListNode *newNode; //A new node ListNode *nodePtr; //To transverse the list ListNode *previousNode = nullptr; //The previous node //Allocate a new node and store num ..
Category : nullptr
So I am trying to implement a linked-list from scratch, and it compiles and runs fine with optimizations turned on or when compiling with the -g flag. It also works on Visual Studio under all configurations. However when compiling with the g++ command, with optimizations and -g flag off, I get: *** Error in `a.out’: ..
This might be a very basic question, but I tried to find the answer in SO and couldn’t find the exact answer to it. What’s the point of initializing a const pointer with nullptr? int *const pi = nullptr; Why does the compiler not emit a warning or error, seeing how pointer pi can’t be ..
I am answering a programming question on hackerrank, therefore the class code and anything outside the post-order function is not permitted. The question was a simple post-order traversal question. I am using c++ after some time, and since the class structure is written out with a pointer as the binary tree’s left and right node, ..
This question is based on code that I found that monitors possible memory leaks, so it contains some code that you probably don’t want to see in regular programs like ordering pointers. However, I saw that a pointer was set to nullptr and then the pointer was compared to a maximum address. Is it guaranteed ..
enter image description here I’ve been working on this assignment, and been running into this bug I haven’t been able to fix for hours. It’s saying unhandled exception thrown, read access violation. I heard you’re not suppose to deference nullptrs, however I don’t believe that’s what I’m doing. void Linkedlist::insertnode(string key, string value) { Node* ..
My understanding – and I’m sure I’m about to learn – is that nullptr was added to C++ to formalise the convention that a zero value for a pointer means the pointer does not point to a valid object. Is there a case for (or against) adding a corresponding nullchar to formalise the convention that ..
I have a const z* zs = nullptr; I want to convert zs to std::span When I try to do std::span<const z>(zs) I get an error saying error: no matching function for call to ‘std::span::span(const z* const&)’ How do I convert to zs to std::span I tried std::span<const z>(zs[0]) it seems to compile. Is that ..
I’m a newbie in c++11 and I’m aware of typeid().name() and nullptr. I was just having some fun with a code but i found out that sizeof(nullptr) is 4 and moreover typeid(str).name() is something complex set of characters NSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE #include<iostream> #include<string> #include<typeinfo> int main(){ std::string str; std::cout<<sizeof(nullptr)<<std::endl; std::cout<<typeid(str).name(); return 0; } I’m a bit confused ..
‘nullptr’ was not declared in scope [duplicate] I am using DevC++ 5.11 as a compiler. I am getting the error, “‘nullptr’ was not declared in scope” when I do believe it is declared in my MyVector.h file. Is this a compiler error or is my code incorrect? Error come in at line 45 of the ..
Web Development Company
Cazare Cristian Brasov
Recent Comments