char lastarg

ifndef_sparc_#define va_start(AP,LASTARG)\(AP=((char*)&(LASTARG)+_va_rounded_size(LASTARG)))/ap指向

arg()和va_end(),必须首先被调用 arg only takes fully promoted types*/c=(char)va_arg(ap,int);

char backward-delete-char to yank yank-last-arg yank-nth-arg yank-pop root@snail-hnlinux:~#root@

last modified:Mon Aug 27 23:09:18 2001,os:Unix 我们利用这一点写了一个叫做first arg is-somefile1

int main(int argc,char*argv[]) { printf("2+3=d",add(2,3));} 程序运行的结果为输出： 2+3=5 这说明不加

(AP=((char*)&(LASTARG)+_va_rounded_size(LASTARG))) else define va_start(AP,LASTARG)\ (_builtin_

char*LASTARG 也是一个字符#ifndef_sparc_#defineva_start(AP,LASTARG)_va_rounded_size(LASTARG)))#else#

defineva_start(AP,LASTARG)(AP=((char*)&(LASTARG)+_va_rounded_size(LASTARG)) voidva_end(va_list);