What is the correct function prototype for the following function?

int doSomething$($ int a$,$ int b$,$ char c $)$

$\{$

I$*$ code goes here $*/$

$\}$

int doSomething$($ int, int, char $)$;

int doSomething$($ char a$,$ int b$,$ int c $)$;

int doSomething$($ int a$,$ int b$,$ char c $)$

void doSomething$()$;