输出一元二次方程胡两个实根

#include <stdio.h>    int main()    {        float a,b,c,delt,x1,x2;        

        printf("输入方程的三个系数:");        scanf("%f%f%f",&a,&b,&c);        delt = b*b-4*a*c;        x1 = (-b+sqrt(delt))/(2*a);        x2 = (-b-sqrt(delt))/(2*a);        printf("x1=%.2f x2=%.2f \n",x1,x2);        return 0;    }