Explanation Required for this Particular For Loop

Question

Can someone please explain this piece of code for me, I am a beginner and I couldn't understand the For Loop here, This code can arrange the numbers from smallest to largest.

int a = Convert.ToInt32(Console.ReadLine()); int b = Convert.ToInt32(Console.ReadLine()); int c = Convert.ToInt32(Console.ReadLine()); int d = Convert.ToInt32(Console.ReadLine()); int [] sayilarr ={a,b,c,d}; Array.Sort(sayilarr); string ss = ""; for (int i = 0; i < 4; i++) { ss += sayilarr[i]; } Console.WriteLine(ss);

numbers are arranged with Array.Sort(sayilarr); Statement, not with for loop. — tchelidze
– tchelidze, Commented Jan 10, 2016 at 20:16
Just try and run the code. Step through it in debug mode when you still not get it. Don't post this kind of questions on StackOverflow. — Henk van Boeijen
– Henk van Boeijen, Commented Jan 10, 2016 at 21:39

Gottfried Lesigang · Accepted Answer · 2016-01-10 20:18:31Z

This code takes 4 inputs from the Console, converts them to Int and saves them into 4 variables

 int a = Convert.ToInt32(Console.ReadLine()); int b = Convert.ToInt32(Console.ReadLine()); int c = Convert.ToInt32(Console.ReadLine()); int d = Convert.ToInt32(Console.ReadLine());

Then you declare an array, which will contain the four ints from the variables

 int [] sayilarr ={a,b,c,d};

Now this array is sorted, no magic loop trick ...

 Array.Sort(sayilarr);

Here a string variable is declared, initially being an empty string

 string ss = ""; for (int i = 0; i < 4; i++) {

in each of the four loops the content of the array on index "i" is concatenated

 ss += sayilarr[i]; }

Finally, the string is shown to you

 Console.WriteLine(ss);

Hope this is clear now :-)

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