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

int
main(int argc, char *argv[])
{
        size_t i = 0;
        size_t maxi;

        if (argc != 2)
                errx(EXIT_FAILURE, "missing argument");

        maxi = atoi(argv[1]);

        while (i < maxi)
                printf("%zu\n", i++);
        return EXIT_SUCCESS;
}