C++ : Program akar persamaan kuadrat

#include "stdio.h"

#include "math.h"

int main()

{

float a, b, c, D, X, X1, X2, XRiil, XImajiner;

printf("Perhitungan akar-akar persamaan aX2+bX+c=0\n");

printf("Masukkan nilai koefisien a, b, dan c:\n");

scanf("%f %f %f", &a, &b, &c);

D = b*b-4*a*c;

printf("Diskriminan = %g\n", D);

printf("Akar persamaan %gX2 + %gX + %g = 0 adalah:\n", a, b, c);

if (D > 0) {

X1 = (-b+sqrt(D))/(2*a);

X2 = (-b-sqrt(D))/(2*a);

printf("X1 = %g\n", X1);

printf("X2 = %g\n", X2);

}

else if (D == 0) {

X = -b/(2*a);

printf("X1 = X2 = %g\n", X);

}

else {

XRiil = -b/(2*a);

XImajiner = sqrt(-D)/(2*a);

printf("Akar imajiner:\n");

printf("X1 = %g+%g*i\n", XRiil, XImajiner);

printf("X2 = %g-%g*i\n", XRiil, XImajiner);

}

return 0;

}

Tags : Akar, Pangkat, kuadrat, C++