Draw Empty Diamond in C++

Code:

#include<iostream>
using namespace std;
int main()
{
	int n;
	cout<<" Enter Number of Rows : ";
	cin>>n;
	cout<<"\n\n";
	int i,j,k;
	for(i=1;i<=n+1;i++)
	{
		cout<<" ";
	}
	cout<<"*\n";
	for(i=1;i<=n;i++)
	{

		for(j=n;j>=i;j--)
		{
			cout<<" ";
		}
    	cout<<"*";
		for(k=0;k<(2*i-1);k++)
		{

			printf(" ");
		}
     cout<<"*\n";
	}
	for(i=1;i<=n;i++)
	{
		for(j=1;j<=i;j++)
		{
		cout<<" ";
		}
	cout<<"*";
		for(k=(2*i-1);k<=(2*n-1);k++)
		{
			cout<<" ";
		}
		cout<<"*\n";
	}
	for(i=0;i<=n;i++)
	{
		cout<<" ";
}
	cout<<"*";

}

Output:

Enter Number of Rows : 7


        *
       * *
      *   *
     *     *
    *       *
   *         *
  *           *
 *             *
 *             *
  *           *
   *         *
    *       *
     *     *
      *   *
       * *
        *