Thread: Recursion

Code:

void
countup(int num)
{
    if (num >= 0)
    {
        countup(num - 1);
        cout << num << " ";
    } else cout << endl;
}

Here is a recursive function that out puts numbers in an ascending order. I'm supposed to add all the numbers up in a new function below:

Code:

int
sumdown(int num)
{
    int sum = 0;
    if (num >= 0)
    {
        
      sum+=sumdown(num - 1);
     
    } else cout << endl;
return(sum);
}

However, this doesn't work. Please help me.

Wow, you're fast. Thank you very much!