butterfly pattern in c 2b 2b

1#include <iostream>
2using namespace std;
3int main()
4{
5    int n;
6    cin >> n;
7    for (int i = n; i >= 1; i++)
8    {
9        for (int j = 1; j <= i; j++)
10        {
11            cout<<"*";
12        }
13        int space = 2*n -2*i;
14
15        for (int j = 1; j <= space; j++)
16        {
17            cout << " ";
18        }
19        for (int j = 1; j <= i; j++)
20        {
21            cout << "*";
22        }
23        cout<<endl;
24    }
25    
26    return 0;
27}

1#include<bits/stdc++.h>
2using namespace std;
3int main()
4{
5	int n;
6	cin>>n;
7	
8	for(int i=1;i<=n;i++)
9	{
10		for(int j=1;j<=i;j++){
11			cout<<"*";
12		}
13		int space=2*n-2*i;
14		for(int j =1;j<=space;j++)
15		{
16			cout<<" ";
17		}
18		for(int j =1;j<=i;j++)
19		{
20			cout<<"*";
21		}
22		cout<<endl;
23	}
24	
25	for(int i=n;i>=1;i--)
26	{
27		for(int j=1;j<=i;j++){
28			cout<<"*";
29		}
30		int space=2*n-2*i;
31		for(int j =1;j<=space;j++)
32		{
33			cout<<" ";
34		}
35		for(int j=1;j<=i;j++)
36		{
37			cout<<"*";
38		}
39		cout<<endl;
40	}
41	return 0;
42}