Sum


using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;

class Program
{
    static void Main()
    {
        decimal[] numbers = { 3, 4, 8 };
        decimal sumTotal = numbers.Sum(); // 15
        Console.WriteLine(sumTotal);

    }
}

The output:


15

The following returns the total length of each of the strings in the names array:


using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;

class Program
{
    static void Main()
    {
        string[] names = { "Java", "C#", "Javascript", "SQL", "Oracle", "Python", "C++", "C", "HTML", "CSS" };
        int combinedLength = names.Sum(s => s.Length);  // 19
        Console.WriteLine(combinedLength);

    }
}

The output:


42
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