In this shot, we will discuss how to make a hollow inverted full pyramid pattern using stars in C++.

##
### Approach
A **nested loop** refers to a loop inside another loop. We will use a nested loop to make the inverted hollow full pyramid pattern in C++. 

Let’s look at an image of the pattern that we want to generate.

We use the `for` loop and the `while` loop to generate this inverted hollow full pyramid pattern. In the loop, we give conditions to print *space* and *star* in each row.


##
### Code
Let's look at the code below to understand this better.

#include <iostream>
using namespace std;

int main() {
  int number;
  cin >> number;
  for (int i = 1; i <= number; i++)
  {
    for (int j = 1; j < i; j++)
    {
      cout << " ";
    }
    for (int j = 1; j <= (number * 2 - (2 * i - 1)); j++)
    {
      if (i == 1 || j == 1 || j == (number * 2 - (2 * i - 1)))
      cout << "*" ;
      else 
      cout << " " ;
    }
    cout << endl ;
  }
  return 0;
}

> Please enter a number above to generate an output.

### Explanation


* *In line 5,* we initialize the variable `number`.

* *In line 6,* we take the input as `number`.

* *In line 7,* we initialize an outer `for` loop. Here, we have given a condition to run the loop for `number` times.

* *In line 9,* we initialize an inner `for` loop. Here, we have given conditions to run the loop for `i` times to print space.

* *From lines 13 to 19,* we initialize the `for` loop. Here, we have given if-else conditions to print `*` or space in each row.

* *In line 20,* we print a next line character. We do this so that the `*` or space gets printed from the next line onwards.

In this way, we can use loops to make an inverted hollow full pyramid pattern in C++.

How to generate a hollow inverted full pyramid pattern in C++

Approach

Code

Explanation