Question

I was trying to write a program in which I take an input number,
example 891 and input each of these number in an array for example
x[0] = 8, x[1] = 9 and x[2] = 1

I was trying to use recursion to implement my method:

void calc(int val, int k)
{
    static int number = val;
    if((val/10))
    {
        calc(val/10, k--);
    }
    int x = number - val*pow(10, k);
    cout << x << ", k = " << k << " and number = " << number << endl;
}

int main()
{
    //write a program that converts a number to string
    int number;
    cout << "Enter a number: ";
    cin >> number;
    number = 891;
    int k = 0;

    //while(number/10 != 0)
        k = 2;

    calc(number, k);
}

Basically I’m trying to use my recursive function to try to break the
number down in its finer parts, however I get an output of (in val):
91, 1, -8019. Is there a way I can improve on this, but maintaining
the structure?

Answer 1

void calc(int val)
{
    cout << "digit:"<<val % 10<< " and number = " << val << endl;
    if((val/10))
    {
        calc(val/10);
    }
}

This will print out each digit (which looks like what you are trying to do in the function).