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How to write a C++ program to draw a pattern ?

#include <iostream>

using namespace std;

int main()

{

int rows;

cout << "Enter number of rows: ";

cin >> rows;

for(int i = rows; i >= 1; --i)

{

for(int space = 0; space < rows-i; ++space)

cout << " ";

for(int j = i; j <= 2*i-1; ++j)

cout << "* ";

for(int j = 0; j < i-1; ++j)

cout << "* ";

cout << endl;

}

return 0;

}

#include<iostream>

using namespace std;

int main()

{

int n, s, i, j;

cout << "Enter number of rows: ";

cin >> n;

for(i = n; i >= 1; i--)

{

//for loop to put space

for(s = i; s < n; s++)

cout << " ";

//for loop for displaying star

for(j = 1; j <= i; j++)

cout << "* ";

// ending line after each row

cout << "\n";

}

return 0;

}