#include <bits/stdc++.h>
using namespace std;
int main()
{
int n;
cin >> n;
int r;
for (r = 0; r < n; r = r + 1)
{
if (r == 0)
{
for (int i = 1; i <= 2 * n - 1; i = i + 1)
{
cout << '*';
}
}
else
{
for (int i = 1; i <= n - r; i = i + 1)
{
cout << '*';
}
for (int i = 1; i <= (2 * r) - 1; i = i + 1)
{
cout << " ";
}
for (int i = 1; i <= n - r; i = i + 1)
{
cout << '*';
}
}
cout << endl;
}
for (r = n - 2; r >= 0; r = r - 1)
{
if (r != 0)
{
for (int i = 1; i <= n - r; i = i + 1)
{
cout << '*';
}
for (int i = 1; i <= (2 * r) - 1; i = i + 1)
{
cout << " ";
}
for (int i = 1; i <= n - r; i = i + 1)
{
cout << '*';
}
}
else
{
for (int i = 1; i <= 2 * n - 1; i = i + 1)
{
cout << '*';
}
}
cout << endl;
}
return 0;
}
what is the problem with this code ? why is it failing the test case?