C++ program to print Inverted Half Pyramid and Hollow Inverted Half Pyramid Pattern

What is Inverted and Hollow Inverted Half Pyramid Pattern?

(i) Inverted Half Pyramid

Program:

#include <iostream>
using namespace std;

int main()
{
    int n;
    cout<<"Enter number of rows: ";
    cin>>n;
    
    for(int row=0;row<n;row++)  //loop to change line
    {
        for(int col=0;col<n-row;col++)  //loop to print *
        {
            cout<<"* ";
        }
        cout<<endl;
    }
    return 0;
}

Output:

*****

****

***

**

*

(ii) Hollow Inverted Half Pyramid

Program:

#include <iostream>
using namespace std;

int main()
{
    int n;
    cout<<"Enter number of rows: ";
    cin>>n;
    
    for(int row=0;row<n;row++)  //loop to change line
    {
        for(int col=0;col<n-row;col++)  //loop to print *
        {
            if(row==0 || col==0|| col==n-row-1) //printing * at boundaries
            cout<<"* ";
            
            else
            cout<<"  ";
        }
        cout<<endl;
    }
    return 0;
}

Output:

*****

*  *

* *

**

*