Răspuns:
1) #include <iostream>
using namespace std;
int main()
{ int n,d,i;
cin>>n;
for(i=0; i<=n; i++)
{
d=i*2;
cout<<d<<" ";
}
return 0;
}
2)
#include <iostream>
using namespace std;
int main()
{ int a,b,x,aux;
cin>>a>>b>>x;
if(a>b)
{
aux=a;
a=b;
b=aux;
}
if(a<x && x<b ) cout<<"DA";
else cout<<"NU";
return 0;
}
3) #include <iostream>
using namespace std;
int main()
{
int x;
cin>>x;
while(x!=0)
{
if(x%3==0) cout<<x<<" ";
cin>>x;
}
return 0;
}
4) #include <iostream>
using namespace std;
int main()
{
int x,nr;
cin>>x;
nr=0;
while(x!=0)
{
if(x%2==1) nr++;
cin>>x;
}
cout<<nr;
return 0;
}