What would be the output of the following code?

#include

int mysteryFunction$1($int a$,$ int b$)$;

int mysteryFunction$2($int a$)$;

int main$()$

$\{$

$//$ pointer to a function

int $(*$functionPtr$1)($int$,$ int$)=$ &mysteryFunction$1$;

int $(*$functionPtr$2)($int$)=$ &mysteryFunction$2$;

printf$("\%$d$",(*$functionPtr$2)(10))$;

return $0$;

$\}$

int mysteryFunction$1($int a$,$ int b$)$

$\{$

return a $*$ b;

$\}$

int mysteryFunction$2($int a$)$

$\{$

return a $*$ a;

$\}$