next_char
int c = next_char();
while ((ch = next_char()) == '\n' || iswhite(ch)) {
(void) next_char(); /* frees its allocated memory */
while ((ch = next_char()) == '\n' || iswhite(ch)) {
ch = next_char();
while ((ch = next_char()) == '.' || iswhite(ch)) {
while ((ch = next_char()) != '\n') {
while ((ch = next_char()) != EOF) {
if ((ch = next_char()) != separator && !silent)
while (isalnum(ch = next_char())) {
while ((c = next_char()) != separator && c != EOF) {
while ((c = next_char()) != separator && c != EOF) {
c = next_char();
c = next_char();
c = next_char();