/*
 * C Sorting example mostly from qsort(3)
 */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <libgen.h>


static int cmpstringp(const void *p1, const void *p2) {
    /* The actual arguments to this function are "pointers to
       pointers to char", but strcmp(3) arguments are "pointers
       to char", hence the following cast plus dereference */

    return strcmp(*(char * const *)p1, *(char * const *)p2);
}


int main(int argc, char *argv[]) {
    int j;

    if (argc < 2) {
        fprintf(stderr, "Usage: %s <string>...\n", basename(argv[0]));
        exit(EXIT_FAILURE);
    }

    qsort(&argv[1], argc - 1, sizeof(argv[1]), cmpstringp);

    for (j = 1; j < argc; j++) {
        puts(argv[j]);
    }

    exit(EXIT_SUCCESS);
}