程序代码：

#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#define maxlen 100
void charge(char argv[],int n)
{
   int i;
   for(i=0;i<n;i++)
     argv[i]=argv[i]+16;
}
void xxx(int fd,int fd1,char buff[],int maxlen)   //编译器提示这个地方缺少“；” 或者 “，”或者“）”，我的脑袋彻底被颠覆了，发生了什么？
{
int n;
while((n=read(fd1,buff,maxlen))>0){
                   if(n!=maxlen){
                   charge(buff,n);
                   if(write(fd,buff,n)!=n){
                   printf("xie ru shuju shibai");
                   exit(0);
          }
          }
          else{
                  charge(buff,maxlen);
          if(write(fd,buff,maxlen)!=maxlen){
                   printf("xie ru shuju shibai");
                   exit(0);
          }
         }
          if(n<0)
                  printf("du shibai");
    }
}

int main()
{
   int fd;
   int fd1;
   int fd2;
   char buff[maxlen];
   int n;
   if((fd=open("kle.txt",O_RDWR))==-1)
           printf("open fail\n");
   if((fd1=open("readme.txt",O_RDONLY))==-1)
           printf("readme.txt open faile!!\n");
   if((fd2=open("mmt.txt",O_RDWR|O_CREAT))==-1)
           printf("open fail\n");
    xxx(fd,fd1,buff,maxlen);
    printf("xieruchenggong\n");
   exit(0);
}