I recently started using Arduino so I still have to adapt and find the differences between C/C++ and the Arduino language.
So I have a question for you.
When I see someone using a C-style string in Arduino (char *str), they always initialize it like this (and never free it) :
char *str = "Hello World";
In pure C, I would have done something like this:
int my_strlen(char const *str)
{
int i = 0;
while (str[i]) {
i++;
}
return (i);
}
char *my_strcpy(char *dest, char const *src)
{
char *it = dest;
while (*src != 0) {
*it = *src;
it++;
src++;
}
return (dest);
}
char *my_strdup(char const *s)
{
char *result = NULL;
int length = my_strlen(s);
result = my_malloc(sizeof(char const) * (length + 1));
if (result == NULL) {
return (NULL);
}
my_strcpy(result, s);
return (result);
}
and then initialize it like this:
char *str = my_strdup("Hello World");
my_free(str);
So here is my question, on C-style Arduino strings, is malloc optional or these people just got it wrong?
Thank you for your answers.