#include #include enum plog { PLOG_INFO, PLOG_WARN, PLOG_ERR }; static const char *msg[] = { "info", "warn", "eror"}; void plog(enum plog type, const char *fmt, ...) { va_list args; va_start(args, fmt); fprintf(stderr, "%s: ",msg[type]); vfprintf(stderr, fmt, args); putc('\n', stderr); va_end(args); }