How to get the max value in c#

Question

I have this pretty simple C# code:

static void Main(string[] args)
{
    int i, pcm, maxm = 0;
    for (i = 1; i <= 3; i++)
    {
        Console.WriteLine("Please enter your computer marks");
        pcm = int.Parse(Console.ReadLine());
    }
    Console.ReadKey();
}

I would like to get max value for the var pcm, how could I do it?

Answer 1

Just keep track of it!

For each iteration, if the entered number is greater than the number that you have in maxm , then set maxm equal to the current entered number.

At the end, you'll have the maximum.

Pseudocode:

max = 0
for three iterations
  get a number
  if that number is more than max
    then set max = that number

Answer 2

Just another alternative to the posted ones.

static void Main(string[] args)
{
   var numbers = new List<int>();

   for (var i = 1; i <= 3; i++)
   {
       Console.WriteLine("Please enter your computer marks");
       numbers.Add(int.Parse(Console.ReadLine()));
   }

   Console.WriteLine(string.Format("Maximum value: {0}", numbers.Max());
   Console.ReadKey();
}

Answer 3

You can save the typed in value in the maxm variable. If the user types a larger number, then you replace that value:

static void Main(string[] args)
{
    int i, pcm = 0, maxm = 0;
    for (i = 1; i <= 3; i++)
    {
        Console.WriteLine("Please enter your computer marks");
        pcm = int.Parse(Console.ReadLine());

        // logic to save off the larger of the two (maxm or pcm)
        maxm = maxm > pcm ? maxm : pcm;
    }
    Console.WriteLine(string.Format("The max value is: {0}", maxm));
    Console.ReadKey();
}

Answer 4

I would try this

static void Main(string[] args)
{
    int i, pcm, maxm = 0;
    for (i = 1; i <= 3; i++)
    {
        Console.WriteLine("Please enter your computer marks");
        pcm = int.Parse(Console.ReadLine());
        if(maxm <= pcm)
        {
             maxm = pcm;
        }
    }
    Console.ReadKey();
}

Answer 5

Just for fun, here's another solution that uses Linq.

static void Main(string[] args)
{
    int i, pcm, maxm = 0;
    List<int> vals = new List<int>();
    for (i = 1; i <= 3; i++)
    {
    Console.WriteLine("Please enter your computer marks");
    pcm = int.Parse(Console.ReadLine());
    vals.Add(pcm);
    }
    maxm = vals.Max(a => a);
    Console.ReadKey();
}