C :

/*

*/
#include <stdio.h>
#include <math.h>
int main(void)
{
	float a,b,c,x1,x2;
	scanf("%f%f%f",&a,&b,&c );
	x1 = (-b + sqrt(b*b - 4*a*c))/2*a;
	x2 = (-b - sqrt(b*b - 4*a*c))/2*a;
	printf("%g %g",x1,x2);
	
	return 0;
}

C++ :

#include "stdio.h"
#include "math.h"

int main(int argc, char* argv[])
{
	double a,b,c;
	while(~scanf("%lf%lf%lf",&a,&b,&c))
	{
	
	  printf("%.0lf %.0lf\n",(-1*b+sqrt(b*b-4*a*c))/(2*a),(-1*b-sqrt(b*b-4*a*c))/(2*a));
	}
	return 0;
}