Energy of Photon

// Formula
// 

#include <iostream>
#include<stdlib.h>
using namespace std;
int main()
{
	double e = 0;//energy of the problem
	double h = 6.6256;// plank 's constant
	double c = 299792458;// speed of light
	double Redwave =700;
	double Orange = 635;
	double Yellow = 590;
	double Green = 560;
	double Cyan = 520;
	double Blue = 490;
	double Violet = 450;
	int color = 0;
	while (1 < 2) {

		cout << "Press 1 To Know Red" << endl;
		cout << "Press 2 To Know Orange" << endl;
		cout << "Press 3 To Know Yellow" << endl;
		cout << "Press 4 To Know Green" << endl;
		cout << "Press 5 To Know Cyan" << endl;
		cout << "Press 6 To Know Blue" << endl;
		cout << "Press 7 To Know Violet" << endl;
		cout << "If you Want to Exit Press 9" << endl;
		cout << "Press Now :";

		cin >> color;
		switch (color) {
		case 1:
			e = (h * c) / Redwave;
			cout << "The energy of Red photon is :" << e << " Joules" << endl;
			break;
		case 2:
			e = (h * c) / Orange;
			cout << "The energy of Orange photon is :" << e << " Joules" << endl;
			break;
		case 3:
			e = (h * c) / Yellow;
			cout << "The energy of Yellow photon is :" << e << " Joules" << endl;
			break;
		case 4:
			e = (h * c) / Green;
			cout << "The energy of Green photon is :" << e << " Joules" << endl;
			break;
		case 5:
			e = (h * c) / Cyan;
			cout << "The energy of Cyan photon is :" << e << " Joules" << endl;
			break;
		case 6:
			e = (h * c) / Blue;
			cout << "The energy of Blue photon is :" << e << " Joules" << endl;
			break;
		case 7:
			e = (h * c) / Violet;
			cout << "The energy of Violet photon is :" << e << " Joules" << endl;
			break;
		case 9:
			exit(1);


		}
	}
	
	return 0;
}