Answer 3 Looping CPP

#include<iostream>
using namespace std;
int main()
{
  int n,i,j;;

  cout<<"Enter number of rows\n";
  cin>>n;
  int n1=n/2+1;
  for (i=1;i<=n1;i++)
  {
    for (j=1;j<=n1-i;j++)
        {cout<<" ";}

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

    cout<<"\n";
  }

  for (i= 1;i<=n1-1;i++)
  {
    for (j=1;j<=i;j++)
        {cout<<" ";}

    for (j=1;j<=2*(n1-i)-1;j++)
        {cout<<"*";}

    cout<<"\n";
  }

  return 0;
}


/*
#include <bits/stdc++.h>
using namespace std;
#define FIO                           \
    ios_base::sync_with_stdio(false); \
    cin.tie(NULL);                    \
    cout.tie(NULL);

int main()
{
    FIO;
    int n;
    cin >> n;
    int n1 = (n + 1) / 2;
    int n2 = n1 - 1;
    int i = 1;
    while (i <= n1)
    {
        int spaces = 1;
        while (spaces <= n1 - i)
        {
            cout << " ";
            spaces++;
        }
        int stars = 1;
        while (stars <= 2 * i - 1)
        {
            cout << "*";
            stars++;
        }
        cout << endl;
        i++;

    }
    i = i - 2;
    while (i >= 1)
    {

        int spaces = 1;
        while (spaces <= n2 - i + 1)
        {
            cout << " ";
            spaces++;
        }
        int stars = 1;
        while (stars <= 2 * i - 1)
        {
            cout << "*";
            stars++;
        }
        cout << endl;
        i--;
    }
}
*/