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#include <stdio.h>
#include <unistd.h>
#include <sys/types.h>
#include <sched.h>
#include <sys/time.h>
#include <stdlib.h>
#include <iostream>
#include <fstream>
using namespace std;
int main(int argc, char* argv[])
{
int fd[2], nb;
pid_t childpid;
char fileBuff[500];
string line;
string linefinal;
char buffer[500];
ofstream myfile;
pipe(fd);
// pipe(fdCtP);
if((childpid = fork()) == -1)
{
perror("fork");
exit(1);
}
if(childpid == 0)
{
// For reading from pipe
close(fd[1]);
read(fd[0], fileBuff, sizeof(fileBuff));
const char *cstr = fileBuff;
// Writing to the file
// ofstream myfile;
myfile.open(argv[3]);
myfile << fileBuff;
myfile.close();
printf("File copied!n");
}
else
{
// for reading file
ifstream myfile1(argv[2]);
if(myfile1.is_open())
{
while(getline(myfile1,line))
{
linefinal=linefinal+line+"n";
}
sprintf(buffer, "%s", linefinal.c_str());
// cray = linefinal.c_str();
// Writing file into pipe
close(fd[0]);
write(fd[1], buffer, (strlen(buffer)+1));
myfile1.close();
printf("File copied!n");
}
else
{
printf("Error in opening the filen");
}
exit(0);
}
return(0);
}
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