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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#ifndef class
        #define class struct
#endif
#ifndef private
        #define private
#endif
#ifndef public
        #define public
#endif
#ifndef protected
        #define protected
#endif
#ifndef bool
        #define bool int
#endif
#ifndef true
        #define true 1
#endif
#ifndef false
        #define false 0
#endif
class Parent{
 //private members
 private class Parent *this;
 private char *name;
 //public members
 public void (*construct)(class Parent *this);
 public bool (*setName)(class Parent *this, const char *name);
 public char* (*g ......

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#include<stdio.h>
#include<stdlib.h>
#include<unistd.h>
#include<sys/types.h>
#define MAXLINE 1024
int main(void)
{
int n,files[2];
pid_t pid;
char line[MAXLINE];
if(pipe(files)<0)
{
fprintf(stderr,"pipe error!\n);
exit(1);
}
if((pid=fork())<0)
{
fprintf(stderr,"fork error!\n");
exit(1);
}
else if(pid>0)
{
close(fd[0]);
write(fd[1],"how are you!\n",13);
}
else
{
close(fd[1]);
n=read(fd[0],line,MAXLINE);
write(STDOUT_FILENO,line,n);
}
exit(0);
}
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#include<stdio.h>
#include<stdlib.h>
#include<unistd.h>
#include<string.h>
#define MAXLINE 1024
int main(void)
{
int n,int1,int2;
char line[MAXLINE];
while((n=read(STDIN_FILENO,line, ......

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#include<stdio.h>
#include<stdlib.h>
#include<unistd.h>
#include<sys/types.h>
#define MAXLINE 1024
int main(void)
{
int n,files[2];
pid_t pid;
char line[MAXLINE];
if(pipe(files)<0)
{
fprintf(stderr,"pipe error!\n);
exit(1);
}
if((pid=fork())<0)
{
fprintf(stderr,"fork error!\n");
exit(1);
}
else if(pid>0)
{
close(fd[0]);
write(fd[1],"how are you!\n",13);
}
else
{
close(fd[1]);
n=read(fd[0],line,MAXLINE);
write(STDOUT_FILENO,line,n);
}
exit(0);
}
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#include<stdio.h>
#include<stdlib.h>
#include<unistd.h>
#include<string.h>
#define MAXLINE 1024
int main(void)
{
int n,int1,int2;
char line[MAXLINE];
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void Invert(struct node *p)
{
     if(p->next==NULL) return;
     if(p->next->next!=0)
          Invert(p->next);
    p->next->next = p;
    p->next = 0;
}
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int fn1(const char *str)
{
 unsigned char *p = ( unsigned char *)str;
 int a[255]={0};
 for( ; *p != '\0'; p++ )
  if( ++a[*p] == 2 ) return 1;
 return 0;
}
int fn2(const char *str)
{
   const char *p1, *p2;
   if (*str == '\0')
      return 0;
   for (p1 = str; *p1 != ''; p1++)
      for (p2 = p1 + 1; *p2 !=''; p2++) 
         if (*p1 == *p2)
            return 1;
   return ......
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