5.A program to copy file using system call

A program to copy file using system call.

//ducskecode

#include<iostream>
using namespace std;
#include<fontl.h>
#include<stdlib.h>
#include<unistd.h>
void filecopy(int fi, int f2);
int main(int argc, char *argv[])
{
if(argc!=3)
{
cout<<"File not found ";
exit(1);
}
int fd1=open(argv[1], 0);
if(fd1==-1)
{
cout<<"\nError in file opening.";
exit(1);
}
int fd2=creat(argv[2], 0666);
if(fd2==-1)
{
cout<<"\n Error while creating file ";
exit(1);
}
filecopy (fdi, fd2);
close(fd1);
close(fd2);
return 0;
}
void filecopy (int fi, int f2)
{
char buf[512];
int cnt;
while(cnt=read(f1, buf, sizeof(buf)))
{
write(f2, buf, cnt) ;
}
}

Output: