Concatenare string in limbaj C

Buna ziua, se da urmatorul program

// Program 6.4 Joining strings
#define __STDC_WANT_LIB_EXT1__ 1 // Make optional versions of functions available
#include <string.h> // Header for string functions
#include <stdio.h>
int main(void)
{
char preamble[] = "The joke is:\n\n";
char str[][40] = {
"My dog hasn\'t got any nose.\n",
"How does your dog smell then?\n",
"My dog smells horrible.\n"
};
unsigned int strCount = sizeof(str)/sizeof(str[0]);
// Find the total length of all the strings in str
unsigned int length = 0;
for(unsigned int i = 0 ; i < strCount ; ++i)
length += strnlen_s(str[i], sizeof(str[i]));
// Create array to hold all strings combined
char joke[length + strnlen_s(preamble, sizeof(preamble)) + 1];
if(strncpy_s(joke, sizeof(joke), preamble, sizeof(preamble)))
{
printf("Error copying preamble to joke.\n");
return 1;
}
// Concatenate strings in joke
for(unsigned int i = 0 ; i < strCount ; ++i)
{
if(strncat_s(joke, sizeof(joke), str[i], sizeof(str[i])))
{
printf("Error copying string str[%u].", i);
return 2;
}
}
printf("%s", joke);
return 0;
}

Programul acesta este preluat din cartea Beginning of C , Volume 5. Ei bine cand dau compile imi apar urmatorile erori pe care nu mi le pot explica :
undefined reference to `strncpy_s'|
undefined reference to `strnlen_s'|
undefined reference to `strncat_s'|
In carte pentru a afla lungimea , a copia si a concatena acestea sunt definite in carte . Folosesc ca si compiler Code Blocks . Ma puteti ajuta cu o explicatie in legatura cu eroarea aceasta ? Multumesc anticipat

Incearca sa activezi -std=c11 daca n-ai un compilator foarte vechi. Sau Visual Studio daca esti sub Windows

1. Aia e eroare de linker, lipseste libraria unde-i implementata functia respectiva.

2. Code::Block nu-i compilator, folosesti GCC drept compilator sau altceva ?

N-am intalnit sa foloseasca cineva CodeBlocks cu altceva decat gcc

Da folosesc GCC pe CodeBlocks , aveam selectat varianta C/C++17, am selectat pentru -std=C11 dar tot aceeasi eroare o am. Exista vreun echivalent pentru limbajul 2017 sau ceva de genu?