Program persamaan kuadrat

#include<stdio.h>
#include<conio.h>
main()
{
float a,b,c,D,x,x1,x2;
printf("-- Program Mencari Akar Persamaan Kuadrat -- \n");
printf("--- Bentuk Persamaan ax^2 + bx + c = 0 ----- \n");
printf("-------------------------------------------- \n");
printf(" Masukan Nilai Koefisien a = ");scanf("%f",&a);
printf(" Masukan Nilai Koefisien b = ");scanf("%f",&b);
printf(" Masukan Nilai Koefisien c = ");scanf("%f",&c);
printf("-------------------------------------------- \n");
D = (b*b)-(4*a*c);
printf(" Diskriminan = %2.2f\n",D);
printf("-------------------------------------------- \n");
if (D>0)
{x1=((-b+(D))/(2*a));
printf(" x1 = %2.2f\n",x1);
x2=((-b-(D))/(2*a));
printf(" x2 = %2.2f\n",x2);}
else if(D==0)
{x= -b/(2*a);
printf(" x1 = x2 = %2.2f\n",x);}
else if(D<0)
{x1=((-b/2*a)+ (((-D))/2*a));
printf(" x1 = %2.2f\n",x1);
x2=((-b/2*a)-(((-D) )/2*a));
printf(" x2 = %2.2f\n",x2);
printf(" Adalah Bilangan Imajiner \n");}
printf("--------------------------------------------\n");
getch();
}

Semoga berhasil di pc anda .
Sy erwin hasibuan pamid undur diri
Kalaw ad yg kurang helas isi form komentar di bawah ini