How can I multiply really big numbers c++

Question

I have the following code

      int i, a, z;
i = 2343243443;
a = 5464354324324324;
z = i * a;
cout << z << endl;

When these are

Answer 1

As Jarod42 suggested is perfectly okay, but i am not sure whether overflow will take place or not ?

Try to store each and every digit of number in an array and after that multiply. You will definitely get the correct answer.

For more detail how to multiply using array follow this post http://discuss.codechef.com/questions/7349/computing-factorials-of-a-huge-number-in-cc-a-tutorial