RGB TO HEXA & HEXA TO RGB C++ | Together C & C++ | Page 1

hollow gale Oct 20, 2022, 1:08 AM

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hi guys, i need help to convert from rgb to hexadecimal and from hexadecimal to rgb in c++, can someone help me? "Design a COLOR object with whatever methods and attributes you think are relevant.
Allow your data to be loaded in RGB or HEX, and return both as well" thats the statement

upbeat bobcatBOT Oct 20, 2022, 1:08 AM

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wide willowBOT Oct 20, 2022, 1:17 AM

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hollow gale Oct 20, 2022, 1:38 AM

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"Design a COLOR object with whatever methods and attributes you think are relevant.
Allow your data to be loaded in RGB or HEX, and return both as well" thats the statement

olive solar Oct 20, 2022, 1:39 AM

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so what exactly do you expect as a response to that?

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that we just do your homework for you? 😛

hollow gale Oct 20, 2022, 1:40 AM

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nope, i have that code i maded

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/*
Diseñe un objeto COLOR con los métodos y atributos que considere pertinente.
Permita que se puedan cargar sus datos en RGB o HEXADECIMAL, y que devuelva ambos también
*/

#include <iostream>
#include <sstream>
using namespace std;

/*
Transformar RGB a HEXADECIMAL
*/

string rgbahexa(int r, int g, int b, bool a = false);
string rgbahexa(int r, int g, int b, bool a)
{
stringstream ss;
if (a)
ss << "#";
ss << hex << (r << 16 | g << 8 | b);
return ss.str();
}

int main(int argc, char *argv[]) {

int r,g,b;
cout << "Ingrese el valor RGB en este orden (Ejemplo: 22 10 22): ";
cin >> r >> g >> b;
cout << rgbahexa(r,b,g,true) << endl;

return 0;

}

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im spanish btw

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thats code works for rgb to hexa, but in a wrong way

wide willowBOT Oct 20, 2022, 1:42 AM

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olive solar Oct 20, 2022, 1:42 AM

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hollow gale thats code works for rgb to hexa, but in a wrong way

what is wrong exactly?

hollow gale Oct 20, 2022, 1:42 AM

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this result need to be showed #160A16 but this is showed "#16160a" i used a rgb to hexa converter and this is wrong

olive solar Oct 20, 2022, 1:43 AM

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well

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what do you think happens when you >> an int from 160A16?

hollow gale Oct 20, 2022, 1:43 AM

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and I don't know very well how to go from hexa to rgb (it's also part of the task)

hollow gale Oct 20, 2022, 1:44 AM

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olive solar what do you think happens when you >> an int from `160A16`?

hmm?

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what happens?

olive solar Oct 20, 2022, 1:45 AM

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well what do you think happens?

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your code is doing that

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cin >> r >> g >> b;

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what do you think this does?

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i have to go afk for a while i'm afraid

hollow gale Oct 20, 2022, 1:47 AM

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olive solar what do you think this does?

read the values entered by console? I think

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oh, actually i solved it

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i just changed

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cin >> b >> g >> r;
cout << rgbahexa(b,g,r,true) << endl;

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and worked

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thanks a lot

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I think it's fine, right?

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now i need to convert from hexadecimal to rgb but i don't know well how to do it😢

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/*
Diseñe un objeto COLOR con los métodos y atributos que considere pertinente.
Permita que se puedan cargar sus datos en RGB o HEXADECIMAL, y que devuelva ambos también
*/

#include <iostream>
#include <sstream>
using namespace std;

/*
Transformar RGB a HEXADECIMAL
*/

string rgbahexa(int r, int g, int b, bool a = false);
string rgbahexa(int r, int g, int b, bool a)
{
stringstream ss;
if (a)
ss << "#";
ss << hex << (r << 16 | g << 8 | b);
return ss.str();
}

int main(int argc, char *argv[]) {

int r,g,b;
cout << "Ingrese el valor RGB en este orden (Ejemplo: 22 10 22): ";
cin >> b >> g >> r;
cout << rgbahexa(b,g,r,true) << endl;

return 0;

}

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that is my code to go from RGB to HEXA

upbeat bobcatBOT Oct 20, 2022, 2:00 AM

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@hollow gale Has your question been resolved? If so, run !solved :)

olive solar Oct 20, 2022, 2:28 AM

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I don't see how cin >> b >> g >> r would work here

upbeat bobcatBOT Oct 20, 2022, 3:21 PM

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This question thread is being automatically closed. If your question is not answered feel free to bump the post or re-ask. Take a look at !howto ask for tips on improving your question.

#RGB TO HEXA & HEXA TO RGB C++