Driver Code
int main ( ) { int n = 12 ; int minimal = MinimumPrimes ( n ) ; if ( minimal != -1 ) cout << " Minimum ▁ number ▁ of ▁ single " << " ▁ digit ▁ primes ▁ required ▁ : ▁ " << minimal << endl ; else cout << " Not ▁ possible " ; return 0 ; }