iswhite
while (c != EOF && iswhite(c));
while (GETC(!=, EOF) && iswhite(c))
while(c != '\n' && iswhite(c));
if (iswhite(c))
if (!iswhite(c))
while (iswhite(c))
if (!iswhite(c))
if (!iswhite(c)) {
while (iswhite(c)) {