#include <stdlib.h>
#include <stdio.h>
#include <string.h>

int main()
{
    const char* data_sets[][200] =
        {
            { "00000", "11111",         },
            { "22222", "33333", "44444" },
            { "55555"                   },
        };

    for (size_t i = 0; i < sizeof(data_sets) / sizeof(data_sets[0]); i++)
    {
        const char** data_set = data_sets[i];
        printf("data_set[%u]\n", i);
        for (size_t j = 0; data_set[j]; j++)
        {
            printf("  [%s]\n", data_set[j]);
        }
    }

    return 0;
}