c语言,二分法求根无论我输入什么都是error.#include#includedouble fun(double x)

c语言,二分法求根无论我输入什么都是error.#include#includedouble fun(double x){return 1.0*x*x-10;}int main(){double x1,x2;if ((scanf("%f,%f",&x1,&x2)!=0)&&(fun(x1)*fun(x2)>=0)&&(x10)x2=(x1+x2)/2 ;continue;if(fun((x1+x2)/2)=1E-6||(fabs(fun(x2))>=1E-6));printf("%f\t%f",x1,x2);printf("%f\t%f",fun(x1),fun(x2));}elseprintf("error!\n");return 0;