#include <cstdlib>
#include <iostream>
#include <fstream>

using namespace std;

ifstream infile;
ofstream outfile;
const int resolution = 10;

void readValues(int [][10], int [][10], int [][10] , int &, int &);
int MAX(int , int , int );
void RGBtoCMYK(int , int , int , double&, double&, double&, double&);

//void writeValues(double[][10], double[][10],double[][10],double[][10] , ofstream&);

int red[resolution][resolution], green[resolution][resolution] , blue [resolution][resolution], maxrow, maxcol;
double c,m,y,k;
    int main()
    {

        ifstream infile("C:/image.txt"); //Reading from file
        ofstream outfile("C:/CMYKR.txt");

        cout.setf(ios::fixed,ios::floatfield);
        cout.precision(1);

        if (!infile.is_open()) {      // Condition if the file is not open
        cout << "Error. Unable to open file.";
        system ("PAUSE");
        exit(1);
        }

    readValues(red,green,blue,maxrow,maxcol); // this function reads the data and puts it in the three arrays
cout<<endl<<"CMYK VALUES"<<endl;
   for (int i=0;i<maxrow ; i++)
   {
        for(int j=0;j<maxcol ;j++)
            {
               void RGBtoCMYK(red[i][j],green[i][j],blue[i][j], c , m, y, k);

               cout << "," <<c<< "," <<m<< "," <<y<< "," <<k<<",   ";
          }

}


      //  writeValues(c,m,y ,k,outfile);
}
void readValues(int red[][10], int green[][10], int blue[][10] , int &maxrow, int &maxcol)
{

int  x = 0, y = 0;
infile >> maxrow >> maxcol;

        for(x = 0;x<maxrow;x++)
        {
            for(y=0;y<maxcol;y++)
              {
                   infile >> red[x][y];
              }
        }

        for(x = 0;x<maxrow;x++)
        {
            for(y=0;y<maxcol;y++)
              {
                   infile >>blue[x][y];
              }
        }

        for(x = 0;x<maxrow;x++)
        {
            for(y=0;y<maxcol;y++)
              {
                   infile >>green[x][y];
              }


}

}
int largest(int x, int y, int z)
{
    if (x > y && x > z)
        return x;
    else if (y > z)
    return y;
    else
    return z;

}
void RGBtoCMYK(int r, int g, int b, double &c, double &m,  double &y, double &k) // function RGBtoCMYK(r, g, b, c, m, y, k) that receives RGB values as input parameters, and returns CMYK values as reference parameters

{

    double w;



    if(r == 0 && g == 0 && b == 0) { // If the RGB values are all 0 then the CMY values are all 0 and the K value is 1

        c = 0;
        m = 0;
        y = 0;
        k = 1;

    }

    else {

        w = largest(r / 255.0, g / 255.0, b / 255.0);
        c = (w - (r / 255.0)) / w;
        m = (w - (g / 255.0)) / w;
        y = (w - (b / 255.0)) / w;
        k = 1.0 - w;

    }

}