Generate Random Number With Specific Data Type

[dulipat]

Hello,
I'm new in c++, and I have question regarding generate random number with a really long integer.
First, I tried like this :

 int main()
{
	srand(time(0));

	unsigned long long randomNumber1 = rand();
	unsigned long long randomNumber2 = rand();

	unsigned long long num1 = (randomNumber1 % 8999999999999999999); 
	unsigned long long num2 = (randomNumber2 % 8999999999999999999); 
	
	cout<<"1st random number = " << num1 << endl;
	cout<<"2nd random number = " << num2 << endl;
	
	return 0;
}

it works fine, but I can not make it exceed 8999999999999999999.
my idea would be to define new data type that is 224 bit integer.

So my questions are :
1. how to define new 224 bit integer?
2. how to generate random number using that new data type?

Thank you.

[Cubbi]

1. how to define new 224 bit integer?
2. how to generate random number using that new data type?

The boost libraries offer this functionality:
http://www.boost.org/doc/libs/release/libs/multiprecision/doc/html/boost_multiprecision/tut/random.html