NAG Library Manual, Mark 27.2
```/* nag_anova_rowcol (g04bcc) Example Program.
*
* Copyright 2021 Numerical Algorithms Group.
*
* Mark 27.2, 2021.
*/

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

int main(void) {
Integer c__0 = 0, exit_status = 0, i, *irep = 0, *it = 0, j, n, ncol, nrep,
nrow, nt;
NagError fail;
const char *fmt_99999[] = {"%3.0f  ", "%10.4f  ", "%10.4f  ", "%10.4f  ",
"%8.4f"};
double *c = 0, c_b20 = 1e-5, *cmean = 0, *ef = 0, gmean, *r = 0;
double *rmean = 0, *rpmean = 0, *table = 0, *tmean = 0, *y = 0;

#define TABLE(I, J) table[((I)-1) * 5 + (J)-1]
#define C(I, J) c[((I)-1) * nt + (J)-1]

INIT_FAIL(fail);

printf("nag_anova_rowcol (g04bcc) Example Program Results\n");

/* Skip heading in data file */
scanf("%*[^\n]");
scanf("%" NAG_IFMT " %" NAG_IFMT " %" NAG_IFMT " %" NAG_IFMT "", &nrep, &nrow,
&ncol, &nt);
if (!(c = NAG_ALLOC(nt * nt, double)) ||
!(cmean = NAG_ALLOC(nrep * ncol, double)) ||
!(ef = NAG_ALLOC(nt, double)) ||
!(r = NAG_ALLOC(nrep * nrow * ncol, double)) ||
!(y = NAG_ALLOC(nrep * nrow * ncol, double)) ||
!(rmean = NAG_ALLOC(nrep * nrow, double)) ||
!(rpmean = NAG_ALLOC(nrep, double)) || !(tmean = NAG_ALLOC(nt, double)) ||
!(table = NAG_ALLOC(30, double)) || !(irep = NAG_ALLOC(nt, Integer)) ||
!(it = NAG_ALLOC(nrep * nrow * ncol, Integer))) {
printf("Allocation failure\n");
exit_status = -1;
goto END;
}

n = nrep * nrow * ncol;
for (i = 1; i <= n; ++i)
scanf("%lf", &y[i - 1]);
for (i = 1; i <= n; ++i)
scanf("%" NAG_IFMT "", &it[i - 1]);
/* nag_anova_rowcol (g04bcc).
* Analysis of variance, general row and column design,
* treatment means and standard errors
*/
nag_anova_rowcol(nrep, nrow, ncol, y, nt, it, &gmean, tmean, table, c, nt,
irep, rpmean, rmean, cmean, r, ef, c_b20, c__0, &fail);
if (fail.code != NE_NOERROR) {
printf("Error from nag_anova_rowcol (g04bcc).\n%s\n", fail.message);
exit_status = 1;
goto END;
}
printf("\n ANOVA TABLE\n\n");
if (nrep > 1) {
printf("\n Reps        ");
for (j = 1; j <= 5; ++j)
printf(fmt_99999[j - 1], TABLE(1, j));
}

printf("\n Rows        ");
for (j = 1; j <= 5; ++j)
printf(fmt_99999[j - 1], TABLE(2, j));

printf("\n Columns     ");
for (j = 1; j <= 5; ++j)
printf(fmt_99999[j - 1], TABLE(3, j));

printf("\n\n Treatments  ");
for (j = 1; j <= 5; ++j)
printf(fmt_99999[j - 1], TABLE(4, j));

printf("\n Residual    ");
for (j = 1; j <= 3; ++j)
printf(fmt_99999[j - 1], TABLE(5, j));

printf("\n Total       ");
for (j = 1; j <= 2; ++j)
printf(fmt_99999[j - 1], TABLE(6, j));

printf("\n Treatment means\n\n");
for (i = 1; i <= nt; ++i)
printf("%10.4f%s", tmean[i - 1], i % 6 ? "" : "\n");
printf("\n\n S.E. of difference (orthogonal design) = %10.4f\n", C(2, 1));
END:
NAG_FREE(c);
NAG_FREE(cmean);
NAG_FREE(ef);
NAG_FREE(r);
NAG_FREE(y);
NAG_FREE(rmean);
NAG_FREE(rpmean);
NAG_FREE(tmean);
NAG_FREE(table);
NAG_FREE(irep);
NAG_FREE(it);
return exit_status;
}
```