Question

Write a program(C#) that prompts the user for her home planet. Based on the

user's input the program will display the following:

Input: earth

Message: earth. You are an Earthling and you have 10 fingers

Input: VENUS

Message: VENUS. You are a Venusian and you have 12 fingers

Input: Mars

Message: Mars. You are a Martian and you have 8 fingers

any other input

Message: I am sorry I don't know of that planet

You may use either the ToUpper() or ToLower() methods

You MUST USE A NESTED IF statement to solve this problem

[For full marks you need to accept all permutations of earth, venus and mars]

Answer 1

using System;
public class Test
{
        public static void Main()
        {
            String str = Console.ReadLine(); // it will take input from user
            // nested if
            if(str.ToLower()=="earth" || str.ToLower()=="venus" || str.ToLower()=="mars")
        //using ToLower(), we can accept input in any order
            {
                if(str=="earth") // Compare the string to find which planet user belongs too
                    Console.WriteLine(str+". You are an Earthling and you have 10 fingers");
                else if(str=="venus")
                    Console.WriteLine(str+". You are a Venusian and you have 12 fingers");
                else
                    Console.WriteLine(str+". You are a Martian and you have 8 fingers");
            }
            // if the user belongs to unknown planet
            else
                Console.WriteLine("I am sorry I don't know of that planet");
        }
}

Output:-