1 if ( a%2==0)
cout<<a;
else if(b%2==0)
cout<<b;
else if(c%2==0)
cout<<c;
// aici ai putea sa nu folosesti si else
2.
if(b-a==c-b)
cout<<"sunt";
3.
if(a>b && b>c)
cout<<a<<b<<c;
else if(a>b && c>b)
cout<<a<<c<<b;
else if(b>a && a>c)
cout<<b<<a<<c;
else if(b>a && c>a)
cout<<b<<c<<a;
else if(c>b && b>a)
cout<<c<<b<<a;
else cout<<c<<a<<b;
