Program C++ mencetak tanda bintang sebanyak yang diinginkan

#include <iostream>
using namespace std;
int main ()
{
    int jum,s,n,i,j;
    cout<<"jumlah inputan yang diinginkan : "; cin>>n;
    jum=1;
for (i=1;i<=n;i++)
{
    for (j=n-1;j>=i;j--)
{
            cout<<" "; }
            for (s=1;s<=jum;s++)
    {
        cout<<"*";}
jum+=2;
cout<<endl;
        }
        for (i=2;i<=n;i++)
        {
            for (j=2;j<=i;j++)
            {
                cout<<" ";
            }
            for (s=n+(n-1);s>=i+(i-1);s--)
            {
                cout<<"*";
            }
            cout<<endl;
        }}


       /* //cara ke-2
        for(i=1;i<=n;i++)
        {
            for (j=n;j>=i;j--)
            {
                cout<<" ";
            }
            for (s=1;s<=i+(i-1);s++)
            {
                cout<<"*";
            }
            cout<<endl;
        }
        for (i=2;i<=n;i++)
        {
            for (j=1;j<=i;j++)
            {
                cout<<" ";
            }
            for (s=n+(n-1);s>=i+(i-1);s--)
            {
                cout<<"*";
            }
            cout<<endl;
        }
            }*/