program to calculate roots of quadratic equation ax2+bx+c=0

#include
#include
#include
int main (void)
{
 int a,b,c;
 float d,e,f,g;
 printf("please enter the values of a,b,c respectively as in equation ax2+bx+c\n");
 scanf("%i%i%i",&a,&b,&c);
 d=b*b-4*a*c;
  if(d>0)
  {
    e=(-b+sqrt(d))/2*a;
    f=(-b-sqrt(d))/2*a;
     printf("roots are real and they are %f%f",e,f);
   }
     else if(d==0)
     {
       e=-b/2*a;
       printf("roots are real and equal and is equal to  %f",e);
     }
     else
     {
       g=-b/2*a;
       e=sqrt(-d)/2*a;
       f=-sqrt(-d)/2*a;
       printf("root are complex and they are %f + i %f",g,e);
       printf("%f +i %f",g,f);
     }
   getch();
   return 0;
  }