copy.c

#include<stdio.h>

#include<stdlib.h>

#include<sys/types.h>

#include<sys/stat.h>

#include<fcntl.h>

main(int argc,char *argv[])

{

const char reader[500];

int d,i,f,c;

f=O_RDONLY;

d=open(argv[1],f);

if (d==-1)

{

printf("File open error");

}

else

{

i=read(d,reader,sizeof(reader));

c=creat(argv[2],S_IRWXU);

write(c,reader,i);

if (c==-1)

printf("Output file creation error");

else

printf("File %s copied sucessfully to %s",argv[1],argv[2]);

}

}

OUTPUT

./a.out f1 f2

file f1 copied successfully to f2