second degré

void main()
{
int a,b,c,d;
scanf("%d%d%d",&a,&b,&c);
d=b*b-4*a*c;
if(d>0)
{
double x=(-1*b-sqrt(d))/(2*a),y=(-1*b+sqrt(d))/(2*a);
int k=(int)x,l=(int)y;
 if(x<y){
        if(k-x==0)printf("%d ",k);
        else printf("%.1f ",x);
        if(l-y==0)printf("%d",l);
        else printf("%.1f",y);}
        else
        {
            if(l-y==0)printf("%d ",l);
        else printf("%.1f ",y);
        if(k-x==0)printf("%d",k);
        else printf("%.1f",x);
        }
    }
    if(d<0)printf("No real solutions");
    if(d==0)
    { double x=(-1*b)/(2*a);int z=(int)x;if(x-z==0)printf("%d",z);else printf("%.1f",x);}}