```/* nag_dge_load (f16qhc) Example Program.
*
* Copyright 2017 Numerical Algorithms Group.
*
* Mark 26.1, 2017.
*/

#include <stdio.h>
#include <nag.h>
#include <nag_stdlib.h>
#include <nagf16.h>
#include <nagx04.h>

int main(void)
{
/* Scalars */
double alpha, diag;
Integer exit_status, m, n, pda;
/* Arrays */
double *a = 0;
/* Nag Types */
Nag_OrderType order;
NagError fail;

#ifdef NAG_COLUMN_MAJOR
order = Nag_ColMajor;
#else
order = Nag_RowMajor;
#endif

exit_status = 0;
INIT_FAIL(fail);

/* Skip heading in data file */
scanf("%*[^\n] ");
/* Read the problem dimensions */
scanf("%" NAG_IFMT "%" NAG_IFMT "%*[^\n] ", &m, &n);
scanf("%lf%lf%*[^\n] ", &alpha, &diag);

if (order == Nag_ColMajor)
pda = m;
else
pda = n;

if (m > 0 && n > 0) {
/* Allocate memory */
if (!(a = NAG_ALLOC(m * n, double)))
{
printf("Allocation failure\n");
exit_status = -1;
goto END;
}
}
else {
printf("Invalid m or n\n");
exit_status = 1;
return exit_status;
}

* General matrix initialization.
*
*/
nag_dge_load(order, m, n, alpha, diag, a, pda, &fail);
if (fail.code != NE_NOERROR) {
exit_status = 1;
goto END;
}

/* Print output */
/* nag_gen_real_mat_print (x04cac).
* Print real general matrix (easy-to-use)
*/
fflush(stdout);
nag_gen_real_mat_print(order, Nag_GeneralMatrix, Nag_NonUnitDiag,
m, n, a, pda, "Matrix A", 0, &fail);
if (fail.code != NE_NOERROR) {
printf("Error from nag_gen_real_mat_print (x04cac).\n%s\n", fail.message);
exit_status = 1;
goto END;
}

END:
NAG_FREE(a);

return exit_status;
}
```