problema 4 -15.10.2014

#include <iostream>
#include <cmath>
using namespace std;
int numara(int x)
{int cif,k=0,xx=x;
while(x)
{cif=xx%10;
k++;
x/=10;
}
return k;
}
int permuta(int k,int x)

{int p;
p=pow(10,k-1);
x=x/p+x%p*10;
return x;
}
int nrprim(int x)
{if(x==0 || x==1 || (x%2==0 && x!=2))
return 0;
for(i=3;i<=sqrt(x);i+=2)
if(x%i==0)
return 0;
return 1;
}
int extraprim(int x)
{int k=numara(x),i;
for(i=1;i<=k;i++)
{if(nrprim(x)==0)
return 0;
x=rotire(x,k)
return 1;



int main()
{ int x;
cout<<"x=";cin>>x;
if(extraprim(x)==1)
cout<<"da";
else
cout<<"nu";
return 0;}

}