Long time ago I wrote C. Could anyone fill me in why the first code snippet is arg parsing the way it is?
int main(int argc, char* argv[]) {
if (argc > 1) {
char\* r_loc = strchr(argv[1], 'r');
if (r_loc != NULL) {
ptrdiff_t r_from_start = (r_loc - argv[1]);
if (r_from_start == 1 && argv[1][0] == '-' && strlen(r_loc) == 1) {
in_reverse = 1;
}
}
}
...
Why not
if (argc > 1 && strcmp(argv[1], "-r") == 0) {
in_reverse = 1;
for example?