[Soal4]Cylinder's_color_code_name

// Khisby Al Ghofari, 06.2017.1.06852, Kelas B
#include <iostream>

using namespace std;

int main()
{
    string letter,color,gas;
    cout << "\n===============================================\n";
    cout << "Welcome To \n";
    cout << "Application Cylinder's Color Code Name and Gas\n";
    cout << "=================================================\n \n";

    cout << "Choose your Cylinder Gas Color\n";
    cout << "Orange, Brown, Yellow, Green \n\n";
    cout << "Input the first letter of cylinder color : ";
    cin >> letter;

    if(letter == "o" or letter == "O"){
        color = "Orange";
        gas = "Ammonia";
    }else if(letter == "b" or letter == "B"){
        color = "Brown";
        gas = "Carbon Monoxide";
    }else if(letter == "y" or letter == "Y"){
        color = "Yellow";
        gas = "Hydrogen";
    }else if(letter == "g" or letter == "G"){
        color = "Green";
        gas = "Oxygen";
    }else{
        cout << "Your input is invalid";
        return 0;
    }

    cout << "\n\nThe color of your letter code is " << color << " and the gas is " << gas << "\n\n\n";


}