#include

#include

#include

#include

int main$()\{//$ Open a file for writing. Create it if it doesn't exist.

int fd $=$ open$("$example$.$txt$",$ O$\_$WRONLY $|$ O$\_$CREAT $|$ O$\_$TRUNC, $0644)$;

if $($fd $==-1)\{$

perror$("$Error opening file for writing"$)$;

return $1$;

$\}//$ Text to write to the file

const char $*$text $=$ "Hello, World!

$"$;

ssize$\_$t bytes$\_$written $=$ write$($fd$,$ text, strlen$($text$))$;

if $($bytes$\_$written $==-1)\{$

perror$("$Error writing to file"$)$;

close$($fd$)$;

return $1$;

$\}$

$//$ Close the file after writing

close$($fd$)$;

$//$ Reopen the file for reading

fd $=$ open$("$example$.$txt$",$ O$\_$RDONLY$)$;

if $($fd $==-1)\{$

perror$("$Error opening file for reading"$)$;

return $1$;

$\}$

$//$ Buffer to hold the read data

char buffer$[128]$;

ssize$\_$t bytes$\_$read $=$ read$($fd$,$ buffer, sizeof$($buffer$)-1)$;

if $($bytes$\_$read $==-1)\{$

perror$("$Error reading from file"$)$;

close$($fd$)$;

return $1$;

$\}$

$//$ Null$-$terminate the buffer to make it a valid string

buffer$[$bytes$\_$read$]=\text{'}\backslash 0\text{'}$;

$//$ Print the read content

printf$("$Read from file: $\%$s$",$ buffer$)$;

$//$ Close the file after reading

close$($fd$)$;

return $0$;

$\}$

using this code and the format $,$ concepts and the syntax $.$ give me the answer for the below questions.

Q$1.$ Write a program to read the contents of file F$1$ into file F$2.$ The

contents of file F$2$ should not get deleted or overwritten.

hint: use O$\_$APPEND flag

$$ Q$2.$ Write a program using open$()$ system call to copy one file's

contents into another.