#include <stdio.h>
#include <math.h>

extern double func(double x,double y,double z);

int main()
{
	double qgaus(double (*func)(double), double a, double b);
	double quad3d(double (*func)(double,double,double), double x1, double x2); // double �ɕύX

	double temp;

	temp = quad3d(func,0,2);
	printf("%lf\n",temp);

	return 0;
}