Show the output produced by each of the following program fragments. Assume that i and

$j$ are int variables.

$($a$)$

$i=6$;

$j=i+=i$;

printf$("\%$d $\%$d$",i,j)$;

$($b$)$

$i=5$;

$j=(i-=2)+1$;

printf$("\%$d $\%d,i,j)$;

$($c$)$

$i=7$;

$j=6+(i=2\mathrm{.}5)$;

printf$("\%$d $\%$d$",i,j)$;

$($d$)$

$i=2$;$j=8$;

$j=(i=6)+(j=3)$;

printf$("",i,j)$;