Prime Numbers program

Prime Numbers program
This program determines if a number is prime. Click here for the program's source file.

#include <iostream> using namespace std; int main() {       int num=0;       int count=0;       int prime=1;       char ans=' ';       do       {             cout <<"Enter a number:  ";             cin >> num;             for (int i=(num)/2; i>1; i--)             {                   if (num%i==0)                   {                         count=count+1;                         if (count==1)                               cout <<"Internal Factor(s):  ";                         prime=0;                         cout <<i<<" ";                   }             }             if (prime==0)             {                   cout<<"\nNumber is not prime."<<endl;             }             if (prime==1)             {                   cout <<"Number is prime."<<endl;             }             cout<<"Do you wish to find another prime:  ";             cin>>ans;             cin.ignore(200,'\n');             count=0;             prime=1;             system("cls");       }while(ans =='y' || ans=='Y');       system("pause");       return 0; }