$4.[25$ pts$.]$ Assume that the main function calls SUB$1$ function, and parameter passing methods forformal parameters are as follows: a is passed$-$by$-$value, b is passed$-$by$-$result, c is passed$-$by$-$reference,and, finally, d is passed$-$by$-$value$-$result. What is printed when we run this application? Do not justprint the output. Show all the steps of execution.void SUB$1($int a$,$ int b$,$ int c$,$ int d$)\{$a $=$ a $+1$;b $=$ a $*2$;c $=5+$ b;d $=$ d $+3$;$\}$void main$($void$)\{$int w$=1$;int x$=2$;int y$=3$;int z$=4$;SUB$1($w$,$ x$,$ y$,$ z$)$;print $($w$,$ x$,$ y$,$ z$)$;$\}$