Completed

[23h0pfjN]

Its done

[Arres]

The program above you typed have only one problem, you are using = in second while loop, which is an assignment operator. You must use == in while loop which is a conditional operator.
But still your program doesn't give the output as you want at end.
check it out as below.

#include <iostream>
#include <string>
#include <conio.h> // added to pausa screen, used function  getch() at end

using namespace std;

int main()
{
	int i = 0;
	int stars;

//5
//

	cout << "how many stars?" << endl;
	cin >> stars;
	cout << "" << endl;
	while(stars >= i)
	{
		cout << "*";
		while(stars == i)
		{
			cout << "" << endl;
			stars -= 1;
			break;
		}
	i+=1;
	}
	getch();// to pause screen when program ends
	return 0;
}

The below program is right according to output sample you given.

#include <iostream>
#include <string>
#include <conio.h> // added to pausa screen, used function  getch() at end

using namespace std;

int main()
{
	int i = 0;
	int stars;

//5
//

	cout << "how many stars?" << endl;
	cin >> stars;
	cout << "" << endl;
	while(stars > i)
	{
		int j=0;
		while(j < stars)
		{
			cout << "*" ;
			++j;
		}
	cout << endl;
	--stars;
	}
	getch();// to pause screen when program ends
	return 0;
}

and why you including string? I think there is no need of string in this program.