GUIDELINES:
Look at main(): it calls various functions.
You are asked to implement two functions: str_cpy() and str_cat(). No need
to implement str_printf() and str_free()
Reading main() carefully will allow to understand str_cpy() and str_cat()
signature and usage.
The code you write needs to be "library quality"; as good as you would
expect a good libc to implement such functions.
At the top of the page, you see 4 includes - indicating the functions that
can be used to implement str_cpy() and str_cat().
*
* FYI: it is possible to implement str_cpy() and str_cat() efficiently in no
* more than 7 lines of code per function, and in less than 5 minutes.
<include <stdio.h>
<include <stdlib.h>
<include <string.h>
<include <stdarg.h>
([]int main(int argc, char *argv
}
;char *s = NULL
;( "str_cpy(&s, "Hola Hola
; (str_cpy(&s, s+5
;("str_cat(&s, " Mundo
;(str_printf(&s, "%s!", s
!" */puts(s); /* result: "Hola Mundo
;(str_free(&s
; return 0
{
