creating objects

i am giving the option to create any no of class "Data" objects.so how can i do that since i will be asking him one by one not at once like i will not ask him to enter the number of objects to make. rather i will be asking like do you want another object to be created?

Forgive me if I am totally misunderstanding. I think you want a vector.

Example

Code:

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#include <vector>
using std::vector;

int main(void) {
  vector <my_object> array;
  // put code here
  return 0;
}

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You should be more specefic, I cann't understand your question too.

Code:

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#define MAX_OBJECTS 200

Object* MyObjects[MAX_OBJECTS];
int i = 0;

while( Answer == YES ) //Use an appropriate loop condition
{
    MyObjects[i++] = new Object;
}

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After the loop, i will be the number of objects that have been created.