$13)(10$ points$)$ Thread. Consider the following program $($main$.$c$)$ using the pthread library in C: #include #include #include void$*$ f$1()\{$ printf $("$Nice day!

$")$; return NULL; $\}$ int main$()\{$ pthread$\_$t thl; pthread create$($&thl$,$ NULL, f$1,$NULL$)$; return $0$; a$.(2$ point$)$ What is the command to compile the above program using the gcc compiler to an executable file named as main? Remember, you need to link the pthread library b$.(3$ points$)$ What is the output of the above code? please explain c$.(5$ points$)$ How to fix this problem? You need to add a line of code in the blank. Please explain why this works. What is the output of the code after filling in the blanks? #include #include #include void$*$ f$1()\{$ printf$("$Nice day!

$")$; return NULL; $\}$ int main$()\{$ pthread$\_$t thl; pthread$\_$create$($&th$1,$ NULL, f$1,$NULL$)$; return $0$;