ex_hello_world_x.c
#include "ex_hello_world.h"
int main(void)
{
Vstr_base *s1 = hw_init();
Vstr_ref *ref = NULL;
vstr_add_cstr_ptr(s1, s1->len, "Hello");
vstr_add_rep_chr(s1, s1->len, 'W', 5);
if (s1->conf->malloc_bad)
errno = ENOMEM, err(EXIT_FAILURE, "Add string data");
if (!vstr_sub_rep_chr(s1, strlen("HelloWW"), 1, 'o', 1))
errno = ENOMEM, err(EXIT_FAILURE, "Substitute string data");
if (!vstr_sub_cstr_buf(s1, strlen("HelloWoW"), strlen("WWW"), "rld\n"))
errno = ENOMEM, err(EXIT_FAILURE, "Substitute string data");
if (!(ref = vstr_ref_make_ptr((char *)"XYZ ", vstr_ref_cb_free_ref)))
errno = ENOMEM, err(EXIT_FAILURE, "Create data reference");
vstr_add_ref(s1, strlen("Hello"), ref, strlen("XYZ"), strlen(" "));
vstr_ref_del(ref);
if (s1->conf->malloc_bad)
errno = ENOMEM, err(EXIT_FAILURE, "Add string data");
while (io_put(s1, STDOUT_FILENO) != IO_NONE) {}
exit (hw_exit(s1));
}