How do I declare an array of objects whose class has no default constructor?

Question

If a class has only one constructor with one parameter, how to declare an array? I know that vector is recommended in this case. For example, if I have a class

Answer 1

class single
{
    int data;
public:
    single()
    {
        data = 0;
    }
    single(int i)
    {
        data = i;
    }
};

// in main()
single* obj[10000];
for (unsigned int z = 0; z < 10000; z++) 
{
    obj[z] = new single(10);
}