输入输出

#include <stdio.h>
#include <math.h>
int main(void)
{
	int a,b,c;
	printf("please input a,b,c: ");
	scanf("%d %d %d",&a,&b,&c);
	printf("Output:\nx1=%.4f, x2=%.4f\n",(-b-sqrt(b*b-4*a*c))/(2*a),(-b+sqrt(b*b-4*a*c))/(2*a));
	return 0;
}