list5-5.cpp

来自「这是c++编程方面的名著的例子代码」· C++ 代码 · 共 40 行

#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/wait.h>
#include <sys/file.h>
#include <fstream.h>
#include <string.h>



unsigned long Duration;
unsigned long NumBytes;
unsigned long NumBytesRead;
int Number;


void main(void)
{

          
     int Fd;
     int Status;
     execl("list5-6","list5-6",NULL);
     Fd = open("pipe1",O_WRONLY);
     if(Fd == -1){
        cout << "can't open pipe yet" << endl;
     }
     while(Fd == -1)
     {
          sleep(1);
          Fd = open("pipe1",O_WRONLY);
     } 
     write(Fd,"hello_world",11);
     close(Fd);     
     cout << "Writer Done " << endl;
}