`getopt` example

/*
    `getopt` example with defaults of `-s 524288*4` and `-b 128*2`.
*/

#include <getopt.h>

int main(int argc, char ** argv)
{
    int memory_size = 524288*4;
    int block_size = 128*2;

    int opt;

    while ((opt = getopt(argc, argv, "b:s:")) != -1)
    {
        switch (opt)
        {
            case 'b':
                block_size = atoi(optarg);
                break;
            case 's':
                memory_size = atoi(optarg);
                break;
            default:
                block_size = 128;
                memory_size = 524288;
        }
    }
}