preferably an algorithm that requires less

[merkutinaa]

I am currently working on a program (C++) to calculate the quadratic formula. (I program as a hobby) I looked at some of the algorithms online, but only starting Geometry, I had no clue what anything meant. Could someone please explain one of the algorithms in language a freshman could understand, preferably an algorithm that requires less calculations if it were to be programmed
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[brianfry713]

http://en.wikipedia.org/wiki/Quadratic_formula

Code: Select all

#include <iostream>
#include <cmath>
using namespace std;

int main() {
  double a, b, c;
  while(cin >> a >> b >> c)
    cout << "x = " << (-b + sqrt(b * b - 4.0 * a * c)) / (2.0 * a) << " and " << (-b - sqrt(b * b - 4.0 * a * c)) / (2.0 * a) << endl;
  return 0;
}