#include <iostream.h> #include <math.h> int fun(int n) {     int i;     for(i=2;i<=sqrt(n);i++)     if (n%i==0) return 0;     return 1; }     int main() {     int a;     while(cin>>a)     {         if(a==0) return 0;         int flag=0;         int b=3;         while(1)         {             if(fun(b) && fun(a-b))             {                                  flag=1;                 break;             }             if(a-b<=3) break;                 b++;                      }         if(flag)         cout<<a<<" = "<<b<<" + "<<a-b<<endl;         else         cout<<"Goldbach's conjecture is wrong." <<endl;     } }       

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