35 lines
962 B
C++
35 lines
962 B
C++
#include <math.h>
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#include <iostream>
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#include "fonction.h"
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using namespace std;
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double calcul_discriminant(double a, double b, double c) {
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return (b*b - 4 * a * c);
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}
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void calcul_racines(double a, double b, double c) {
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double discriminant;
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discriminant = calcul_discriminant(a, b, c);
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if (discriminant >= -pow(10, -10)
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&& discriminant <= pow(10, -10)
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) {
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discriminant = 0;
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}
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if (discriminant < 0) {
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cout << "delta = " << discriminant << endl;
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return;
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} else if (discriminant == 0) {
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double x0 = (-b/ (2*a));
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cout << "delta = " << discriminant << endl;
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cout << "La racines est " << x0 << endl;
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return;
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}
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double x1;
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double x2;
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x1 = (-b - sqrt(discriminant)) / (2 * a);
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x2 = (-b + sqrt(discriminant)) / (2 * a);
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cout << "delta = " << discriminant << endl;
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cout << "Les racines sont " << x1 << " " << x2 << endl;
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return;
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} |