Problem regarding star 2n sequence

Question

Stars

Write a program that prints a diagram of the function 2n , as follows.

*

**

****

********

****************

******************************** **************************************************************** ********************************

****************

********

****

**

*

Your program should contain only one ‘*’ character.

PLEASE USE LOOPS FOR THIS C++ PROGRAMMING!!!! THIS SHOULD START WITH #include<iostream> and then using namespace std; !!!!!!!!

Answer 1

#include <stdio.h>

#include <iostream>

using namespace std;

//n as the input of the function

int main()

{

int n = 4;

for (int i=1; i < n; i++) {

int k = i * i;

for (int j=0; j < k; j++) {

cout << "*";

}

cout << "\n";

}

for (int i=n; i > 0; i--) {

int k = i * i;

for (int j=0; j < k; j++) {

cout << "*";

}

cout << "\n";

}

return 0;

}