Data Types - Basic Addition and Concat

Sample Input

12
4.0
is the best place to learn and practice coding!

Sample Output

16
8.0
Self Learning is the best place to learn and practice coding!

Explanation:
When we sum the integers  and , we get the integer . 
When we sum the floating-point numbers  and , we get . 
When we concatenate Self Learning with is the best place to learn and practice coding!, we get Self Learningis the best place to learn and practice coding!.

Solution:
using System;
using System.Collections.Generic;
using System.IO;

class Solution {
    static void Main(String[] args) {
        int i = 4;
        double d = 4.0;

        string s = "HackerRank ";
        // Declare second integer, double, and String variables.
        int iEntered = 0;
        double dEntered = 0.0;
        string sEntered = string.Empty;

        // Read and save an integer, double, and String to your variables.

        iEntered = Convert.ToInt32(Console.ReadLine());
        dEntered = Convert.ToDouble(Console.ReadLine());
        sEntered = Console.ReadLine();

        // Print the sum of both integer variables on a new line.
        Console.WriteLine(i+iEntered);       

        // Print the sum of the double variables on a new line.
        Console.WriteLine((d + dEntered).ToString("F1"));
        
        // Concatenate and print the String variables on a new line
        // The 's' variable above should be printed first.

        Console.WriteLine($"{s}{sEntered}");
  }

}

Happy Learning!!!!