CODEWITHSUNDEEP
c#arrays
user4291582
user4291582

Reputation:

Adding Array Elements

i'm attempting to learn C# and I have this code. I want it to display a random list of integers and then add them all together within the array and then display the average of all the numbers. Where have I gone wrong, can anyone help? Thanks.

using System;

class grades
{

    public static void Main(string[] args)
    {
        int sumValue = 0;
        int[] grades = new int [ 30 ];
        Random rnd = new Random();

    for (int i = 0; i < 30; i++)
        grades[i] = rnd.Next(1,101);

    foreach (int i in grades)
        {
        Console.WriteLine("{0}", i);
        sumValue = sumValue + i;
        }

    double average = sumValue/30;
    Console.WriteLine("{0}", average); 
    }
}

Upvotes: 2

Views: 108

Answers (1)

Marc Gravell
Marc Gravell

Reputation: 1062770

Yeah, the random integers are displayed but the adding and the average isn't calculated.

Yes, it is; you can make it more obvious:

double average = sumValue / 30.0;
Console.WriteLine("The average is: {0:##0.0}", average);

Note also the .0 which ensures we aren't doing integer arithmetic (different fraction / rounding rules).

Upvotes: 5

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