#include <stdlib.h> #include <string.h> #include <stdio.h> static int compare (const void *a, const void *b) { return strcmp (*(char **) a, *(char **) b); } int main (void) { char bufs[500][20]; char *lines[500]; size_t lens[500]; size_t i, j; srandom (1); for (i = 0; i < 500; ++i) { lens[i] = random() % 19; lines[i] = bufs[i]; for (j = 0; j < lens[i]; ++j) lines[i][j] = random() % 26 + 'a'; lines[i][j] = '\0'; } qsort (lines, 500, sizeof (char *), compare); for (i = 0; i < 500 && lines[i] != NULL; ++i) puts (lines[i]); return 0; }