help inverting a right triangle

[tgould66]

Hey everyone, i am tasked with modifying this code to invert the right triangle to make it look like this if i enter a height of 5
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I tried everything that i can think of, and still have no idea how to do it. Thanks

#include <iostream>
using namespace std;
int main()

{
	char a;
	int b, c, d;
	cout << "designate sign";
	cin >> a;
	cout << "designate height";
	cin >> b;
	for (c = 1; c <= b; c++)
	{
		{

			for (d = 1; d <= c; d++) cout << a;
		}
		cout << "\n";
	}
	return 0;
}
  

[SakurasouBusters]

for (c = 1; c <= b; c++)
{
	{
		for (d = 1; d <= c; d++) cout << a;
	}
	cout << "\n";
}

Should be :

for (c = b; c > 0; c--)
{
	for (d = 1; d <= c; d++) cout << a; cout << "\n";
}