$1.$ Analyze Security Problems in this $$Programs$.$

$2.$ Convert this vulnerable code into a secure program.

$3.$ Perform White box testing by path coverage for the $$given program.

#include

#include

#define S $100$

#define N $1000$

int main$($int argc, char $*$argv$[])\{$

$$ char out$[$S$]$;

$$ char buf$[$N$]$;

$$ char msg$[]=$ "Welcome to the argument echoing program

$"$;

$$ int len $=0$;

$$ buf$[0]=\text{'}\backslash 0\text{'}$;

$$ printf$($msg$)$;

$$ while $($argc$)\{$

$$ sprintf$($out$,$ "argument $\%$d is $\%$s

$",$ argc$-1,$ argv$[$argc$-1])$;

$$ argc$--$;

$$ strncat$($buf$,$out,sizeof$($buf$)-$len$-1)$;

$$ len $=$ strlen$($buf$)$;

$\}$

$$ printf$("\%$s$",$buf$)$;

$$ return $0$;

$\}$