USing c++

BigInt project

Need help modifying this

// modify this function so it throws an exception if the result overflows

int factorial(int n)

{

if (n == 0)

return 1;

else

return n * factorial(n-1);

}

Output is gonna look like this.

Fact 0):1 Fact(1:1 Fact 2:2 Fact 3:6 Fact (4:24 Fact (5:120 Fact 6:720 Fact(:5040 Fact 8:40320 Fact 9362880 Fact (10:3628800 Fact (11):39916800 Fact(12 :479001600 Fact 13:0verf low Fact 14):Overflow Fact(15) :0uerf low Fact(16 :0verf low Fact(17> :Overflow Fact(18) :0verf low Fact(19 :0uerflow