Question

What I need:

Write a program named Averages that includes a method named Average that accepts any number of numeric parameters, displays them, and displays their average.

For example, if 7 and 4 were passed to the method, the ouput would be:

7 4  -- Average is 5.5

Test your function in your Main(). Tests will be run against Average() to determine that it works correctly when passed one, two, or three numbers, or an array of numbers.

What I have:

using System;
using System.Collections.Generic;
class Program
{
static void Average(List<float> list){
double sum = 0;
Console.Write("For the list (");
for(int i = 0; i < list.Count - 1; i++){
sum += list[i];
Console.Write(list[i] + ",");
}
sum += list[list.Count - 1];
Console.Write(list[list.Count - 1] + ") the average of its elements is : " + Math.Round((sum / list.Count),2));
  
}
static void Main()
{
List<float> list = new List<float>();
Console.WriteLine("Enter 0 to exit or Enter number to continue: ");
float number = float.Parse(Console.ReadLine());
list.Add(number);
while(number != 0){
Console.WriteLine("Enter 0 to exit or Enter number to continue: ");
number = float.Parse(Console.ReadLine());
if(number != 0)
list.Add(number);
}
Average(list);
}
}

Errors I get:

Compilation failed: 1 error(s), 0 warnings

NtTest2cd32bed.cs(15,9): error CS0103: The name `Averages' does not exist in the current context

Test Contents

[TestFixture]
public class AverageTwoNumbersTest
{
   [Test]
   public void AverageTest()
   {
      using (StringWriter sw = new StringWriter())
      {
        Console.SetOut(sw);
        Averages.Average(8, 10);
        string expected = "8 10  -- Average is 9";
        Assert.AreEqual(expected, sw.ToString().Trim());
      }
   }
}

Answer 1

If you have any doubts, please give me comment...

using System;

using System.Collections.Generic;

using System.Linq;

class Averages {

public static void Average (params int[] list) {

double sum = 0;

for (int i = 0; i < list.Length; i++) {

sum += list[i];

Console.Write (list[i] + " ");

}

Console.WriteLine ("-- Average is "+ Math.Round ((sum / list.Length), 2));

}

public static void Main () {

Average(3,4);

Average(5,2,6,3);

Average(8, 10);

}

}

nagarajuanagaraju-Vostro-3550:30012020$ mcs Averages.cs nagarajuanagaraju-Vostro-3550:30012020$ ./Averages.exe 3 4 -- Average is 3.5 5 2 6 3 -- Average is 4 8 10 -- Average is 9