$1.$ i$)(3$ points$)$ Consider the following scanf call:

scanf$("\backslash \%$f$\backslash \%$d$\backslash \%$f$",\backslash$&a$,\backslash$&b$,\backslash$&c$)$;

If the user enters $12\mathrm{.}345\mathrm{.}6128,$ what will be the value of $\backslash ($ a$,$ b $\backslash ),$ and $\backslash ($ c $\backslash ).$ Note that $\backslash ($ a $\backslash )$ and $\backslash ($ c $\backslash )$ are float$-$type variables and b is an int variable. Support your answer with appropriate explanation.

ii$)(3$ points$)$ Determine the output of the following fragment. Explain how.

$```$

i $=10$; j $=5$;

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

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

$```$

iii$)(3$ points$)$ Determine the output of the following fragment. Explain how.

$```$

i $=7$;

j $=3+--$i $*2$;

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

$```$

$2.(5$ points$)$ What output the following fragment will produce? Explain why. How would you re$-$write the fragment if you wanted the intended output $($i$.$e$.$ "one"$)?$

$```$

i$=1$;

switch $($i $\%3)\{$

case $0$: printf$("$zero$")$;

case $1$: printf$("$one$")$;

case $2$: printf$("$two$")$;

$\}$

$```$

$3.(5$ points$)$ Write a single expression whose value is either $\backslash (-1,0\backslash ),$ or $+1,$ depending on whether i is less than, equal to$,$ or greater than j $,$ respectively with and without using conditional operator.