Having trouble with 2D array

[Acs1994]

I'm very new at C++ and for an assignment i am supposed to create this 2D array display using a loop.

Pattern A
+
++
+++
++++
+++++
++++++
+++++++
++++++++
+++++++++
+++++++++++

So far this is what I have. Can I use this nested for loop to increment the amount of '+' from 1? If yes, can someone help me along?
Thank you any help is much appreciated.

#include <iostream>
using namespace std;
int main()
{	cout << " Pattern A " << "\t\t" << " Pattern B" << endl;
	cout << "________________________________________" << endl;
			
	for (int row = 0; row < 10; row++)
{
		for (int add = 0; add < 10; add ++)
	{
		cout << '+';
		if (add == 10 )
		break;
	}
	cout << endl;
}	
	return 0;
}

[Moschops]

Your logic is flawed. It should be something along the lines of:

Currently, it says:

for row 1 to 10
  output '+' 10 times

Should be:

for row 1 to 10
  output '+' row times