Dynamic Arrays

swayp · #1 26-Jan-2005, 18:59

Ok back to the questions

I've created a database of CD's in which the Database class is simply an array of pointers to CD's (another class). I've initialized it as such:

Code:

CD* databaseArray[50];

Now my question is how I can replace that 50 with a number that can change. For instance, make an array the size of the CD's in the database. Because once I have 50 CD's in the Database it will simply just start writing over them.

Anyone got any ideas?

Max Payne · #2 26-Jan-2005, 21:40

CPP / C++ / C Code:

void DynamicArray(int size)
{
  int *array = new int[size]; 
  
  // delete it
  delete[] array;
}

this way you can create an array of size detrmined during runtime, but be careful if you need to change the size, delete it first then create a new one with the same size.

LuciWiz · #3 27-Jan-2005, 00:24

Quote:

Originally Posted by swayp

Ok back to the questions

I've created a database of CD's in which the Database class is simply an array of pointers to CD's (another class). I've initialized it as such:

Code:

CD* databaseArray[50];

Now my question is how I can replace that 50 with a number that can change. For instance, make an array the size of the CD's in the database. Because once I have 50 CD's in the Database it will simply just start writing over them.

Anyone got any ideas?

You could also use the STL containers - like std::vector. It is resizable, while the c++ array lacks this capability.

Best regards,
Lucian

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