编辑代码

#include <stdio.h>
#include <stdio.h>
int main () {
    float disc a,b,c,x1,x2;
    printf("please enter a,b,c:");
    scanf("%lf,%lf,%lf",&a,&b,&c);
    printf("The equation");
        disc=b*b-4*a*c;
        if((disc)==0)
        printf("has two equal roots :%1f\n",-b/(2*a));
        else if (disc>0)
        {
            x1=(-b+sqrt(disc))/(2*a);
            x2=(-b-sqrt(disc))/(2*a);
            printf("has distinct real roots:%lf and%lf/n",x1,x2);
        }
    return 0;
}