Convert it to c$++$ code that can e run in SIC machine, and please give me an input $...$and explain line by line the code afteer convert Pass $1$:

begin

read first input' line

if OPCODE $=$ 'START' then

begin

save $[$OPERAND$]$ as starting address

initialize LOCCTR to starting address

write line to intermediate file

read next input line

and $($if START$)$

elae

initialize LOCCTR to $0$

while OPCODE $x\text{'}$ END $\text{'}$ do

begin

If this is not a comment line then

begin

$1f$ there is a symbol in the LABEL field then

begin

search SYNTAB for LABEL

$11$ found then

set error flag $($duplicate symbol$)$

elae

insert $($LABEL$,$ LOCCTR$)$ into SYMTAB

end $($if symbol$)$

search OPTAB for OPCODE

$11$ found then

add $3($instruction length$)$ to LOCCTR

else if OPCODE $=$ 'WORD' then

add $3$ to LOCCTR

else if OPCODE $=$ 'RESW' then

add $3*[$OPERAND$]$ to LOCCTR

else if OPCODE $=$ 'RESB' then

add $"[$OPERAND$]$ to LOCCTR

else if OPCODE $=$ 'BYTE' then

begin

find length of constant in bytes

add length to LOCCTR

end $($if BYTE$)$

ol se

set error flag $($invalid operation code$)$

end $($if not a comment$)$

write line to intermediate file

read next input $1$ ine

end $($while not END$)$

write last line to intermediate file

save $($LOCCTR $-$ starting address$)$ as program length

and $\{$Pass $1\}$