functie iterativa

#include
int suma(int n)
{int s=0;
while (n!=0)
{s=s+n%10;
n=n/10;}
return s;}
int Suma(int n)
{if (n==0) return 0;
else return n%10+Suma(n/10);}
int main()
{int n;
cin>>n;
cout<return 0;}