write a program that find smallest number of given number? what should i do?

Question

1.20/5 (5 votes)

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C#

int number;
int min_value = 100000;
for (int i = 0; i <= 4; i++)
{
   Console.WriteLine("Enter a number: ");
   number = Convert.ToInt16(Console.ReadLine());
   if (number < min_value)
      min_value = number;

   Console.WriteLine(number);
}

Posted 3-Dec-12 7:07am

marchest_21

Updated 3-Dec-12 10:54am

fjdiewornncalwe

v2

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Comments

Matt T Heffron 3-Dec-12 13:13pm

And your question is????
Things to think about...
What happens when you enter "100001" (so it is > min_value)? What do you think SHOULD happen?
What happens when you enter "abc"? Again, what do you think SHOULD happen?

Sergey Alexandrovich Kryukov 3-Dec-12 13:15pm

Exactly. Absolutely wrong.

But it explains why OP asks this question -- this is exactly the problem.
--SA

Sergey Alexandrovich Kryukov 3-Dec-12 13:22pm

So, I answered, please see.
--SA

marchest_21 3-Dec-12 13:28pm

thanks

Sergey Alexandrovich Kryukov 3-Dec-12 13:53pm

You are welcome. It will work for you, for sure. Please consider accepting the answer formally (green button) -- thanks.
--SA

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Sergey Alexandrovich Kryukov · Accepted Answer · 2012-12-03T07:22:00

Please see comments to the questions — by Matt T Heffron and mine. This is the problem.

And here is the solution: instead of pointless "100000" use int.MaxValue (and, to find the maximum, start with int.MinValue):
http://msdn.microsoft.com/en-us/library/system.int32.minvalue.aspx[^],
http://msdn.microsoft.com/en-us/library/system.int32.maxvalue.aspx[^].

All other integer types have similar property.

With floating-point types, things are way more interesting. You should use NegativeInfinity and PositiveInfinity:
http://msdn.microsoft.com/en-us/library/system.double.negativeinfinity.aspx[^],
http://msdn.microsoft.com/en-us/library/system.double.positiveinfinity.aspx[^].

The fundamentally important and amazing feature is: infinity values correctly compare with non-infinite values with operators '>', '<', '>=', '<=' and '=='!

—SA