b$)$ If $a=027,$ what is the hexadecimal and decimal values of

c$)$ Please explain the meaning of the following two statements $($i$.$e$.$ what do they accomplish?$)$:

i$.,$ TRISBbits.TRISB $1=1$;

ii$.$ TRISDbits.TRISD$5=0$;

d$)$ Write $2$ different ways of expression an infinite loop in $C$ language.

e$)$ What is the main difference between a "while" loop and a $"$do while" loop?