/* Pixel Color Conversion (RGB to YUV)   (10 points)

The pixels on your monitor are typically represented in RGB color space.
The letters stand for Red, Green, and Blue. The colors are encoded with 
three numbers, one for each color. The most popular format uses 
three integers in the range from 0 to 255 (8-bit color). Here are some 
examples of popular colors and their RGB representations:

   R    G    B  // Name
 ========================
   0    0    0  // black	
 255    0    0  // red
   0  255    0  // green
   0    0  255  // blue
   0    0  128  // navy blue
 255  255    0  // yellow
 165   42   42  // brown
 255  255  255  // white  
   

An alternative color representation that is sometimes useful for computer vision
applicaitons is YUV. Here is how to convert from RGV to YUV:

Y = 0.299R + 0.587G + 0.114B
U = 0.492 (B-Y)
V = 0.877 (R-Y)

[Source: http://www.pcmag.com/encyclopedia_term/0,2542,t=YUVRGB+conversion+formulas&i=55166,00.asp]
[See also http://en.wikipedia.org/wiki/YUV ]

Write a complete C program that reads in 3 numbers representing 
the three colors (R, G, and B) and outputs the corresponding YUV colors.

*/

#include <stdio.h>
#include <stdlib.h>

	
int main(int argc, char* argv[])
{
	int R, G,B;
	double Y, U, V;
	
	printf("Enter R: ");
	scanf("%d", &R);

	printf("Enter G: ");
	scanf("%d", &G);
	
	printf("Enter B: ");
	scanf("%d", &B);

	Y = 0.299*R + 0.587*G + 0.114*B;
	U = 0.492*(B-Y);
	V = 0.877*(R-Y);

	
	printf("[%3d, %3d, %3d] in RGB is equal to [%.3f, %.3f, %.3f] in YUV \n\n", R,G,B, Y,U,V);

	system("pause");
}