iswblank
while (iswblank(c) || c == '\t' || c == '\n')
} while (! iswblank(c) && c != '\t' &&
while (iswblank(c) || c == '\t' || c == '\n')
while (! iswblank(c) && c != '\t' &&
extern int iswblank(wint_t);
using std::iswblank;
if (*p != '\0' && *p != ',' && !iswblank(*p)) {
if (*p != '\0' && *p != ',' && !iswblank(*p)) {