Tema 05.12.2018

#include <iostream>
#include <fstream>


using namespace std;

int ElCif(int, int);
int primul (int);

int main()
{
    int pb;
    cout<<"Introdu nr problemei:"; cin>>pb;
    switch(pb){
        case 1:{//V 13 pb.4
            ifstream in ("bac.in");
            ofstream out ("bac.out");
            int n, cifra;
            cout<<"n="; cin>>n;
            cout<<"cifra="; cin>>cifra;
            cout<<ElCif(n, cifra)<<endl;
            int nr, x;
            cout<<"Cate nr se citesc??"; cin>>nr;
            for (int i=0; i<nr; i++){
                in>>x;
                int m=x;
                while (m){
                    if((m%10)%2)
                        x=ElCif(x, m%10);
                    m/=10;
                }
                if (x)
                    out<<x<<" ";
            }
            break;
        }

        case 2:{//v 28 pb.4
            int n;
            cout<<"n="; cin>>n;
            cout<<"Cel mai mic divizor al sau este:"<<primul (n)<<endl;
            break;
        }

    }
    return 0;
}


    int ElCif (int n, int k){
        int nr_nou=0, p=1;
        while(n){
            if(n%10 != k){
                nr_nou=n%10*p+nr_nou;
                p*=10;
            }
            n/=10;
        }
        return nr_nou;
    }


    int primul (int n){
        if (n==1) return 1;
        for (int i=2; i<n/2; i++){
            if(n%i==0)
                return i;
        }
    }