I'm making a program where I use a function to solve a quadratic, and if the value of a is not zero, it checks if it it has real roots and I have to remember those numbers.
The form is ax^2 + bx + c
Later on in the program, I have to make it so that if I call the program and it has never been called before with an a value which was not 0, then it'll return some value.
I don't know how to make it remember numbers or make it know if it's never been called before. I know something to do with static numbers.