求助C語言二分法求函數(shù)零點

#include stdio.h

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#include math.h

double fun_math(double);

int main(void)

{

/*? 根據(jù)函數(shù)山喚可知Y是關于x的一個遞增函數(shù) */

/*? 先判斷輸漏唯消入Y時，X在(0,1)時是否有解 */

double Y;

double X=0 ,big_x=1.0,small_x=0,tmp_X=1;

unsigned int tmp=0;

printf("Please enter Y:");

scanf("%lf",Y);

if(fun_math(1) = Y 返知 fun_math(0) = Y)

{

while(tmp_X != X)

{

X =(big_x + small_x)/2;

if(fun_math(X)==Y) break;

if(fun_math(X)Y) big_x = X;

else small_x = X;

tmp_X = X ;

X =(big_x + small_x)/2;

}

printf("X = %.6lf",X);

}

else printf("while Y=%lf, X(0,1) on results\n",Y);

return 0;

}