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hi

I want to create a memory game in opengl , so I create some square (3*3)

by two for like this:

for (float i = 0; i < 3 ; i++)
	{
		for (float j = 0; j < 3 ; j++)
		{
			glPushMatrix();
			glTranslatef(+j/9,-i/9,0);
			squre1();// create a cell
			glPopMatrix();
		}
	}

I want to change color of some squares randomly ,after 2 seconds those cells change to before color,and user should remember witch cell is changed and click on it ...

So I want each square selective and know witch cell is clicked.
The simple solution is use array for manage my work but how do it?
and what another solution ?
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