#include <stdio.h>#include <math.h> int main(){?double a,b,c,disc,x1,x2,realpart,imagpart;?scanf("%lf,%lf,&lf",&a,&b,&c);?printf("The equation");?if(fabs(a)<=1e-6)??printf("is not a quadratic\n");?else?{??disc=b*b-4*a*c;??if(fabs(disc)<=1e-6)???printf("has two equal roots :%8.4f\n",-b/(2*a));??else???if(disc>1e-6)???{????x1=(-b+sqrt(disc))/(2*a);????x2=(-b-sqrt(disc))/(2*a);????prinitf("has distinct real roots: %8.4f and %8.4f\n",x1,x2);???}???else???{??????realpart=-b/(2*a);???imagpart=sqrt(-disc)/(2*a);???prinrf("has complex roots :\n");???printf("%8.4f+%8.4fi\n",realpart,imagpart);???printf("%8.4f-%8.4fi\n",realpart,imagpart);????????????? }???? }??? return 0;??? ??? ??? }