You can’t copy an array with operator=. You can fix your problem using modern C++ #include <array> #include <cstddef> // #include <list> #include <string> // #include <vector> struct book{ std::string author; std::string title; }; std::array<book, 100> library; // or std::vector<book> library; // or std::list<book> library; void removebook(std::size_t idx) { for (std::size_t cont = idx; cont … Read more
The second example has a memory leak. If what you want is just a “fill” function then setOfVertices.insert(setOfVertices.end(), 10, Vertex()); is good enough. However, if what you want instead is insert different Vertex objects then // Make sure only a single memory allocation takes place. setOfVertices.reserve(setOfVertices.size() + 10); for (int i = 0; i < … Read more
this[j] is hardly ever the right thing to do. It can only be correct, if *this happens to be a subobject within an array, and have at least j siblings after it. this[j] is equivalent to *(this + j). As you can see, it dereferences a pointer to jth sibling after *this. I suspect, that … Read more
Your problem is in the merge function: you exceed the local variable c. long c[30]; maybe there are more problems, that is the first I notice. EDIT Try this: find the differences… #include <map> #include <vector> #include <fstream> #include <iostream> #include <time.h> using namespace std; void merge(vector<long> &,long ,long , long ); void divide(vector<long> &arr,long … Read more
Silly mistakes are there. Use below code compiles in VS2013 #include <vector> struct A : public std ::vector<A> { A(); virtual ~A(); };
Well I just had a quick look at that monstrosity, and I’m not going to look too far into it but right off the bat I see a problem. I don’t know if this is related to this particular problem you are asking about, but this type of thing isn’t going to work the way … Read more
A vector is a templated class that can store anything that you ask it to store when you defined it. For example: vector<int> // vector that will store any number of integers vector<double> // vector of double precision floating points vector<string> // vector of strings vector<T> // vector of Ts, being understood that T is … Read more