- Metoda cea lunga, merge doar ca dureaza mult.
#include <iostream>
using namespace std;
int n,aux,i, sc,sc2;
int main()
{
cin>>n;
aux=n;
while (aux)
{
sc=sc + aux%10;
aux=aux/10;
}
for (i=n-1;i>0 && ! sc2;i--)
{
aux=i;
while (aux)
{
sc2=sc2+aux%10;
aux=aux/10;
}
if (sc2==sc)
cout<<i;
else
sc2=0;
}
if (i==0 && sc2==0)
cout<<"Nu exista.";
}
Metoda scurta, folosind matematica:
#include <iostream>
using namespace std;
int n;
int main()
{
cin>>n;
if (n<=9)
cout<<"Nu exista.";
else
cout<<n-9;
}
