ref: faa625a1d5ab47ac0438b2cea5b2bde1ea747b8b
dir: /sys/src/libstdio/printf.c/
/* * pANS stdio -- printf */ #include "iolib.h" int printf(const char *fmt, ...){ int n; va_list args; va_start(args, fmt); n=vfprintf(stdout, fmt, args); va_end(args); return n; }