我怎样才能使这个 function 适用于 100 个对象（c++）？

Question

So I have a program that shows the numbers in a text file of each object, the problem is that the original program is with only 6 objects, which I found preety easy, but now I have to change it to work with 100 objects. I tried using a for loop but it only showed me the first object. I don't have much experience programming and have tried other ways but none of them work. Anyways, here's the function:

void Circle::writeAll(Circle circle[6], int &count) {
if (count == 0) {
    cout << "No circles in file. " << endl << endl;
};
if (count == 1 || count == 2 || count == 3 || count == 4 || count == 5 || count == 6) {
    cout << " Radius: " << circle[0].getRadius() << "; Center(x): " << circle[0].getCenterx() << "; Center(y): " << circle[0].getCentery() << endl;
};
if (count == 2 || count == 3 || count == 4 || count == 5 || count == 6) {
    cout << " Radius: " << circle[1].getRadius() << "; Center(x): " << circle[1].getCenterx() << "; Center(y): " << circle[1].getCentery() << endl;
};
if (count == 3 || count == 4 || count == 5 || count == 6) {
    cout << " Radius: " << circle[2].getRadius() << "; Center(x): "  << circle[2].getCenterx() << "; Centery(y): " << circle[2].getCentery() << endl;
};
if (count == 4 || count == 5 || count == 6){
  cout << " Radio: " << circle[3].getRadius() << "; Center(x): " << circle[3].getCenterx() << "; Center(y): " << circle[3].getCentery() << endl;  
};
if (count == 5 || count == 6){
  cout << " Radius: " << circle[4].getRadius() << "; Center(x): " << circle[4].getCenterx() << "; Center(y): " << circle[4].getCentery() << endl;  
};
if (count == 6){
  cout << " Radio: " << circle[5].getRadius() << "; Center(x): " << circle[5].getCenterx() << "; Center(y): " << circle[5].getCentery() << endl;  
};
cout << endl;

};

Answer 1

Instead of an array I would use a built in container type like std::vector . In this case it would look like this:

void Circle::writeAll(const std::vector<Circle>& circles)
{
    size_t size = circles.size();

    if (size == 0)
    {
        cout << "no circles in file" << endl;
        return;
    }

    // print all the circles
    for (auto& circle : circles)
    {
        cout << " Radio: " << circle.getRadius() << "; Center(x): " << circle.getCenterx() << "; Center(y): " << circle.getCentery() << endl;
    }
}

It seemed to me you are trying to print every object until the number count is reached.
Well this will do the same but with a vector of Circle objects.

And as @Josh said if I misunderstood something, please feel free to correct me.

Answer 2

It looks like this is what you're trying to do: (unless I'm not getting the problem right)

void Circle::writeAll(Circle circle[], int &count,int size)
{
    for(int i = 0; i <= size; i++)
    {
        if(count == 0)
            cout << "No circles in file. " << endl << endl;
        else if(count == i)
            cout << " Radius: " << circle[i-1].getRadius() << "; Center(x):"
            << circle[i].getCenterx() << "; Center(y): " << circle[i-1].getCentery() << endl;
    }
}

however you will need to send in a size parameter if the solution is not clear feel free to comment