```/* nag_univar_robust_1var_median (g07dac) Example Program.
*
* Copyright 2019 Numerical Algorithms Group.
*
* Mark 27.0, 2019.
*
*/

#include <nag.h>
#include <stdio.h>

int main(void)
{
Integer exit_status = 0, i, n;
NagError fail;
double *x = 0, xmd, xme, xsd, *y = 0;

INIT_FAIL(fail);

printf("nag_univar_robust_1var_median (g07dac) Example Program Results\n");
/* Skip heading in data file */
scanf("%*[^\n]");
scanf("%" NAG_IFMT "", &n);
if (n > 1) {
if (!(x = NAG_ALLOC(n, double)) || !(y = NAG_ALLOC(n, double))
)
{
printf("Allocation failure\n");
exit_status = -1;
goto END;
}
}
else {
printf("Invalid n.\n");
exit_status = 1;
return exit_status;
}
for (i = 0; i < n; ++i)
scanf("%lf", &x[i]);
/* nag_univar_robust_1var_median (g07dac).
* Robust estimation, median, median absolute deviation,
* robust standard deviation
*/
nag_univar_robust_1var_median(n, x, y, &xme, &xmd, &xsd, &fail);
if (fail.code != NE_NOERROR) {
printf("Error from nag_univar_robust_1var_median (g07dac).\n%s\n", fail.message);
exit_status = 1;
goto END;
}

printf("Output y:\n");
for (i = 0; i < n; ++i)
printf("%6.3f%s", y[i], (i % 11 == 10 || i == n - 1) ? "\n" : " ");
printf("\nxme = %6.3f, xmd = %6.3f, xsd = %6.3f\n", xme, xmd, xsd);
END:
NAG_FREE(x);
NAG_FREE(y);
return exit_status;
}
```