C++ Vector error

Question

i receive an error that the size of vector wasn't define. I cannot understand where I'm doing wrong.

#include <iostream>
using namespace std;

class A
{
    int valoare;
    int vector[];

public:
    A(int param1=3):valoare(param1) {}
    int get_Valoare() {return this->valoare;}
};

int main()
{
    A vector[]=(*(new A(3)), *(new A(4)), *(new A(5)), *(new A(6)));
    cout<<vector[2].get_Valoare();
    //cout << "Hello world!" << endl;
    return 0;
}

you don't have a `std::vector`, you are trying to name an array `vector` (and that's definitely not how you initialize an array either) — UnholySheep, Sep 18 '17 at 13:25
Also what is the point of `*(new A(3))`?? It seems you should start with [a good book](https://stackoverflow.com/questions/388242/the-definitive-c-book-guide-and-list) — UnholySheep, Sep 18 '17 at 13:27
Unless your type is specifically designed to accommodate it, `*new T` is almost certainly not the right thing to do. — François Andrieux, Sep 18 '17 at 13:27
`vector` is a **container class** and you are creating an array of name vector. This is not correct according to C++ standards. Read more about [vectors](http://www.cplusplus.com/reference/vector/vector/) — Ishpreet, Sep 18 '17 at 13:37
Your initialization is equivalent to `A vector[] = *(new A(6));` and a bunch of additional memory leaks. — molbdnilo, Sep 18 '17 at 13:47

score 1 · Answer 1 · answered Sep 18 '17 at 13:33

1

If you want to declare a vector of the type A, which has a constructor that takes a single int, refer to the example below:

#include <vector>

std::vector<A> my_vector{3, 4, 5, 6};

answered Sep 18 '17 at 13:33

Post Self

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Note, that the constructor must not be marked `explicit`. – Post Self Sep 25 '17 at 14:54

C++ Vector error

1 Answers1