A digital world colors are specified in Red ,Green ,Blue(RGB) format with value of (R,G,b) varying on integers scale from 0 to 255 in point publishing the colors are mentioned in cyan, magenta - yellow black (CMYK) format ,with value of C,M,Y and k varying on real scale from 0.0 to 1.0 write the program to convert RGB colors to CMYK as per the following formula..White=max(Red/255,Green/255,Blue/255) ,cyan=(white-Red/255)/white , Magenta=(white -Green/255)/white , black = 1-white. note that if RGB value are 0 then the cmy values are all 0 and the k value is 1.

A digital world colors are specified in Red ,Green ,Blue(RGB) format with value of (R,G,B) varying on integers scale from 0 to 255 in point publishing the colors are mentioned in cyan, magenta - yellow black (CMYK) format ,with value of C,M,Y and k varying on real scale from 0.0 to 1.0 write the program to convert RGB colors to CMYK as per the following formula..

White=max(Red/255,Green/255,Blue/255),

cyan=(white-Red/255)/white 

Magenta=(white -Green/255)/white

 black = 1-white. 

 note that if RGB value are all 0 then the cmy values are all 0 and the k value is 1.

#include<stdio.h>

#include<conio.h>

int main()

{

float r,g,b,rf, gf,bf, max,w,c,y ,m,k;

printf(" Enter the value of red (0to 255):");

scanf("%f",&r);

printf("Enter the value of green(0 to 255):");

scanf("%f",&g);

printf("Enter the value of value of blue(0 to 255):");

scanf("%f",&b);

rf=r/255;

gf=g/255;

bf=b/255;

printf("Red:%f\n Green:%f\nBlue:%f\n",rf,gf ,bf) ;

// find the maximum  all of  them

max=rf;

if (max<gf)

max=gf;

if(max<bf)

max=bf;

//w stand for white

w=max;

printf("white :%f\n\n",w);

c=(w- rf)/w;

m=(w-gf)/w;

y=(w-bf)/w;

k=1-w;

printf("The value of cyan:%f\n",c);

printf("The value of magenta:%f\n",m);

printf("The value of yellow:%f\n",y);

printf("The value of black:%f\n",c); 

} 

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