#include <stdio.h>
#include <math.h>
void main()
{
int a=1,b=2,c=3;
float delta;
float x1;
float x2;
delta=b*b-4*a*c;
if(delta>0)
{
x1 = (-b+sqrt(delta))/(2*a);
x2 = (-b-sqrt(delta))/(2*a);
pritf("该一元二次方程有两个解,x1=%f,x2=%f\n",x1,x2);
}
else if (delta == 0)
{
x1 = (-b)/(2*a);
x2 = x1;
printf("该一元二次方程有一个唯一解,x1=x2=%f\n",x1);
}
else
{
printf("无解\n");
}
}