putc
putc(int c)
#define putc(x, fp) (!__isthreaded ? __sputc(x, fp) : (putc)(x, fp))
#define putc(x, p) (--(p)->_cnt < 0 ? __flsbuf((x), (p)) \
#undef putc
putc(int ch, FILE *iop)
#define putc(x, p) (--(p)->_cnt < 0 ? __flsbuf((x), (p)) \