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Multiple objects from one definition line?

P: 88
It is possible to make many objects from one declaration line? Like:
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  2. String objName = "";
  4. for(int i = 0; i < 10, i++)
  5. {
  6.   Object objName;      //Define an object with the value of objName
  7.   objName = objName+i; //Change objName to make different objects
  8. }
Nov 19 '15 #1
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3 Replies

Expert Mod 5K+
P: 9,197
Use an array.

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  1. Object array[10];   //10 objects of type array.
This only works when you can use the class default constructor.

This assumes you are in C++. The code sample you posted looks like C#.
Nov 19 '15 #2

P: 88
ok, I see. Thanks man. Is it possible to get the user to set the number of objects? like:

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  2. int input = Input.getUserInput();
  3. Object array[input];
Nov 20 '15 #3

Expert Mod 5K+
P: 9,197
Yes. In this case you create the array on the heap using the new operator.

The caveat is that since you allocated the memory, you are responsible for deleting the objects. If you don't you have a memory leak. Now you need to pay attention to destructors.

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  1. int num = 0;
  2. cout << "Enter number of array elements: ";
  3. cin >> num;
  5. Object* array = new Object[num];
And if you are in C++ you would use a vector<Object> instead of reinventing array coding techniques.
Nov 20 '15 #4

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