NAG Library Manual, Mark 29.2
```/* nag_nonpar_randtest_runs (g08eac) Example Program.
*
* Copyright 2023 Numerical Algorithms Group.
*
* Mark 29.2, 2023.
*
*/

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

int main(void) {
/* Integer scalar and array declarations */
Integer exit_status = 0;
Integer nruns, lstate;
Integer *state = 0;

/* NAG structures */
NagError fail;

/* Double scalar and array declarations */
double chi, df, p, *x = 0;

/* Choose the base generator */
Nag_BaseRNG genid = Nag_Basic;
Integer subid = 0;

/* Set the seed */
Integer seed[] = {324213};
Integer lseed = 1;

/* Set the size of the (randomly generated) dataset */
Integer n = 10000;

/* Set the length of the longest run */
Integer max_run = 6;

/* Initialize the error structure */
INIT_FAIL(fail);

printf("nag_nonpar_randtest_runs (g08eac) Example Program Results\n");

/* Get the length of the state array */
lstate = -1;
nag_rand_init_repeat(genid, subid, seed, lseed, state, &lstate, &fail);
if (fail.code != NE_NOERROR) {
printf("Error from nag_rand_init_repeat (g05kfc).\n%s\n", fail.message);
exit_status = 1;
goto END;
}

/* Allocate arrays */
if (!(x = NAG_ALLOC(n, double)) || !(state = NAG_ALLOC(lstate, Integer))) {
printf("Allocation failure\n");
exit_status = -1;
goto END;
}

/* Initialize the generator to a repeatable sequence */
nag_rand_init_repeat(genid, subid, seed, lseed, state, &lstate, &fail);
if (fail.code != NE_NOERROR) {
printf("Error from nag_rand_init_repeat (g05kfc).\n%s\n", fail.message);
exit_status = 1;
goto END;
}

/* Generate vector of n uniform variates between 0.0 and 1.0 */
nag_rand_dist_uniform(n, 0.0, 1.0, state, x, &fail);

/* nag_nonpar_randtest_runs (g08eac).
* Performs the runs up or runs down test for randomness
*/
nag_nonpar_randtest_runs(n, x, max_run, &nruns, &chi, &df, &p, &fail);

/* Display the results */
if (fail.code == NE_NOERROR || fail.code == NE_G08EA_RUNS) {
printf("\n");
printf("Total number of runs found = %10" NAG_IFMT "\n", nruns);
if (fail.code == NE_G08EA_RUNS)
printf("\n");
printf("Chisq = %10.4f\n", chi);
printf("DF    = %8.2f\n", df);
printf("Prob  = %10.4f\n", p);
} else {
printf("Error from nag_nonpar_randtest_runs (g08eac).\n%s\n", fail.message);
exit_status = 1;
goto END;
}

END:
NAG_FREE(x);
NAG_FREE(state);

return exit_status;
}
```