RGB

You are given a binary file that holds $\backslash (\backslash$mathbf$\{16\}\backslash )$ different RGB values. Your job is to read the binary files, stored the RGB values appropriately in the given struct RGB$\backslash \{\backslash \},$ and store all the RGB objects in a

$.$ Once this is done, iterate through the vector and print out each individual RGB value for the RGB Value $\backslash$#$.$

You are given a helper function toHex$($unsigned char value$),$ you will implement this like

$```$

RGB pixel$(0,255,255)$;

cout $$ toHex$($color$.$r; $//$prints $00$

cout $$ toHex$($color$.$g; $//$prints FF

cout $$ toHex$($color$.$b; $//$prints FF

$```$

Reading a Binary File

$1.$ Open the file in binary mode

$2.$ Use function to read raw bytes

$3.$ Specify the number of bytes to read

$4.$ Store the data in an appropriate buffer $($e$.$g$.,$ array,

$5.$ Process the binary data as needed $```$

#include

#include

#include

#include

using namespace std;

struct RGB $\{$

unsigned char R$,$ G$,$ B;

RGB$()$ : R$(0),$ G$(0),$ B$(0)\{\}//$default constructor

RGB$($unsigned char r$,$ unsigned char g$,$ unsigned char b$)$ : R$($r$),$ G$($g$),$ B$($b$)\{\}//$paramaterized constructor

$//$if you're confused on the constructor syntax, you will learn this when class inheritance is brought up$.$

$\}$;

string toHex$($unsigned char value$)\{$

const char$*$ hex$\_$chars $="0123456789$ABCDEF"; $//$create hex values using char$*$

string result;

result $+=$ hex$\_$chars$[($value $>>4)$ & $0$xF$]$; $//$bitshift left $4$ bytes & logical AND $($gets first hex digit$)$

result $+=$ hex$\_$chars$[$value & $0$xF$]$; $//$logical AND $($gets second hex digit$)$

return result; $//$returns the hex value of a given unsigned char as a string

$\}$

int main$()\{$

const string filename $=$ "student$/$binary$/$colors$.$bin";

ifstream file$($filename$,$ ios::binary$)$;

$//$ Read RGB values from binary file

vector colors;

$//$open file in binary

if $(!$file$)\{$

cerr $$ "Error opening file for reading: $"$ filename $$ endl;

return $1$;

$\}$

RGB obj$($unsigned char r$,$ unsigned char g$,$ unsigned char b$)$;

$//$create an RGB object, read all hex values in binary file

$//$hint$,$ use a while loop

$``````$

$//$hint$,$ use a while loop

file.close$()$;

$//$ Print the RGB values

for $($int i $=0$; i $$ colors.size$()$; $++$i$)\{$

RGB color $=$ colors$[$i$]$;

cout RGB Value #i $+1)$ endl;

$//$use toHex to print the RGB values

RGB pixel$(0,255,255)$;

cout $$ toHex$($color$.$r; $//$prints $00$

cout $$ toHex$($color$.$g; $//$prints FF

cout $$ toHex$($color$.$b; $//$prints FF

cout $$ endl;

$\}$

return $0$;

$\}$

$```$