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

double x[2];
double f[2];

extern "C"{void fbox_(double *input,double *output);}

main()
{
	x[0]=1.0;
	x[1]=2.0;
	printf("INPUT\t %g %g\n",x[0],x[1]);
	fbox_(x,f);
	printf("OUTPUT\t %g %g\n",f[0],f[1]);
}