arrays

[sam dhillon]

I really need help with arrays. Can anyone help me!!!!!!!!!!!!!!!!!

[LB]

You have an entire forum ready to help you understand arrays.

What are you having trouble understanding?

[Lying Cataract]

It's an abstraction of data stored in a sequence.

Instead of a single data type with a single value, an array is a sequence of values that you can index through for whatever reasons, all within one identifier of those values.

For example, a non-array integer can be understood like this:

INTEGER CAT = 1 < -- Numeric integer data type.

And an array like this:

INTEGER CAT = [10] < -- Ten indices within the same data type indentifier "CAT".

You can set a value for each index of the array in sequence, and iterate through them, etc. They can be used pretty much like any non-array.

INTEGER CAT [1] = 1

INTEGER CAT [2] = 2

INTEGER CAT [3] = 3

And so on....

[Oria]

int is a number...

int array is a whole bunch of numbers...

[Lachlan Easton]

An array is like a box of chocolates.

[maeriden]

I wish I could new[] chocolates with the same effort.

[Lachlan Easton]

Go outside the bounds of an array, you never know what you're gonna get.

[dheerajkumar]

Don't try to manipulate pointer returned via new[], as it may loose information to delete the allocated array like as given below.

int main()
{
    int * p = new int [10];
    p++;             //Can be dangerous
    delete [] p;  //as operator delete starts deleting an array of 10 pointers    starting from p+1

}

[LB]

It's not dangerous, you just have to be sure you can get back the original. delete[] (p-1); would work in that case, but it would be really ugly.