S_flag
opt_flag = S_flag;
case S_flag:
if (opt_flag == S_flag)
if (opt_flag & (s_flag | S_flag)) {
if (opt_flag & (s_flag | S_flag)) {
opt_flag |= S_flag;
static int S_flag = 0;
S_flag = 1;
if ((S_flag ^ (argc <= 0)) == 1)
if (S_flag) {
} while (S_flag && err_code == SUCCESS);
S_flag = 0;