What does this program print?

$```$

#include

int process$($int x$)\{$

return x$+1$;

$\}$

int main$()\{$

int y $=0$;

y $=$ process$(1)$;

printf$("$sd$",$ y$)$;

$\}$

$```$

$\%$d

$0$

$2$

$1$