use c to Write a function that calculates the least common multiple $($LCM$)$ of two positive integers. The three function parameters are the two positive integers and a pointer indicating the location to which the result should the written. The function should return $0$ in case of successful execution or return $-1$ in case of malformed$/$bad input.

int lcm$\_$calculator$($int a$,$ int b$,$ int $*$lcm$)$; $//$function prototype