if array is more than 10

[seungyeon]

lets say the size of the array is 50
i just want to print the last 10
40-49

[kingkush]

You cycle through an array with a for loop.

for(int i = 0; i < sizeOfArray; i++)
{
     cout << arrayName[i] << endl;
}

This cycle through the entire array from 0 (because thats what i is) to the size of the array (in this case you said 50)

So lets say we changed i to lets say 40? What do you think will happen?

[seungyeon]

        cout << "Enter a max number between 2-5000 to find all primes:  ";
	cin >> max;
	if (max > 5000)
	{
		cout << "Too big, enter a number lower than 5000: ";
		cin >> max;
	}
	if (max > 100)
	{
		primearr[(max-1)-100] = primearr[max]; // to print last 100 elements
	} // is this a good initialization? 

[kingkush]

Not sure what you're trying to do here. What exactly are you trying to initialize in Line 10?

primearr[(max-1)-100] = primearr[max];