Question

I have a char* like this “1 10 14 16”
I want to split it to integer array like 1,10,14,16…
how i do that?

Answer 1

I suggest using strtol in a loop, using explicitly its endptr argument, something like:

char* pc = input_string;
char* end = NULL;
while (*pc) {
   long l = strtol (pc, &end, 0);
   if (end == pc) break;
   do_something_useful_with_the_number (l);
   pc = end;
}

if you want to accumulate all the numbers in an array, replace do_something_useful_with_the_number (l); with code growing that array (probably using malloc and/or realloc …)