Question

I have a large number in c++ stored as a precise double value (assuming the input ‘n’ is 75): 2.4891e+109

Is there any way to convert this to a string or an array of each individual digit?

Here’s my code so far, although it’s not entirely relevant to the question:

int main(){

    double n = 0; 
    cout << "Giz a number: ";
    cin >> n;
    double val = 1;
    for(double i = 1; i <= n; i++){
        val = val * i;
    }
    //Convert val to string/array here?
}

Answer 1

std::stringstream str;
str << fixed << setprecision( 15 ) << yournumber;

You may also be interested in the scientific format flag.

C++11 also has a few interesting functions std::to_string which you may want to check out!