Plan 9 from Bell Labs’s /usr/web/sources/plan9/sys/src/ape/lib/ap/stdio/fprintf.c
/* * pANS stdio -- fprintf */ #include "iolib.h" int fprintf(FILE *f, const char *fmt, ...){ int n; va_list args; va_start(args, fmt); n=vfprintf(f, fmt, args); va_end(args); return n; }