Build a diamond in C++

#include <string.h>
 #include <iostream.h>
 #include <conio.h>int main()
{
    int i, j, k;
    int n = 0;
    cout<<"Program for displaying pattern of *.\n";
    cout<<"Enter the maximum number of *: ";
    cin>>n;

  cout<<"\nHere is the Diamond of Stars\n";

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

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