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/**
* Escribir un programa en C++ para determinar
* las raÃces de la ecuación cuadrática: ax^2 + bx+ c=0
*/
#include <iostream>
#include <iomanip> // setprecision
#include <cmath> // pow()
using namespace std;
double discriminante(float x, float y, float z);
int main()
{
float a, b, c, disc, x1, x2;
cout << "ingrese el coeficiente a: ";
cin >> a;
if (a == 0)
cout << "no es posible determinar las raices" << endl;
else
{
cout << "ingrese el coeficiente b: ";
cin >> b;
cout << "ingrese el coeficiente c: ";
cin >> c;
disc = discriminante(a, b, c);
if (disc < 0)
cout << "discriminante negativo" << endl;
else
{
x1 = (-b + sqrt(disc)) / (2 * a);
x2 = (-b - sqrt(disc)) / (2 * a);
cout << "Las soluciones reales son: " << endl;
cout << "x1 = " << setprecision(3) << x1 << endl;
cout << "x2 = " << setprecision(3) << x2 << endl;
}
}
return 0;
}
double discriminante(float x, float y, float z)
{
double w;
w = pow(y, 2) - 4 * x * z;
return w;
}
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