请问谁修改过screen.c里面varargs.h到stdarg.h后。如何修改
void
542 prints(va_alist)
543 va_dcl
544 {
545         va_list ap;
546         register char *fmt;
547         char   *bp;
548         register int i, count, hd, indx;
549         va_start(ap);
550         fmt = va_arg(ap, char *);
551         while (*fmt != '\0') {
552                 if (*fmt == '%') {
553                         int     sgn = 1;
554                         int     sgn2 = 1;
555                         int     val = 0;
556                         int     len, negi;
557                         fmt++;
558                         switch (*fmt) {
559                         case '-':
560                                 while (*fmt == '-') {
561                                         sgn *= -1;
562                                         fmt++;
563                                 }
564                                 break;
565                         case '.':
566                                 sgn2 = 0;
567                                 fmt++;
568                                 break;
569                         }
570                         while (isdigit(*fmt)) {
571                                 val *= 10;

这里面的va_start()....?

谢谢

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