No output given when displaying an array

Question

I have a "foreach" function in the code that's supposed to shift all objects by two elements. For some reason no output is given at the end. I have no idea what's the problem.

Here is the source code:

using System;

namespace testy
{
    class Program
    {
        static void Main(string[] args)
        {
            string[] alphabet = { "A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "R", "S", "T", "U", "W", "Y", "Z" };

            string[] lol = {"a", "b", "r", "f", "d", "q", "u"};
            int i = 0;
            int por = 0;
            string[] output = new string[lol.Length];
            while(lol.Length == i)
            {
                while(lol[i] == alphabet[por])
                {
                    por++;
                }
                output[i + 2] = alphabet[por];
                por = 0;
                i++;
            }
            foreach(string lol123 in output)
            {
                Console.WriteLine(lol123);
            }
            Console.ReadKey();
        }
    }
}

while(lol.Length == i) is false (lol.Length == 7, but i==0), so it never enters the loop. Btw, try to use debugger to execute the programm step by step if there are any uncertainties about the code — Renat
– Renat, Commented Jul 26, 2019 at 7:20

DarkBee · Accepted Answer · 2019-07-26 07:25:05Z

2

lol.Length is not equal to i, which is zero. While loops don't do anything when their condition is false in the first place.

edited Jul 26, 2019 at 7:25

DarkBee

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answered Jul 26, 2019 at 7:20

yeoman

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Comments

pappbence96 · Accepted Answer · 2019-07-26 07:21:57Z

1

int i = 0;
....
while(lol.Length == i){ ... }

Here, you are iterating while lol is 0 in length. Since lol is initialized to be 7 elements long, the whole loop is skipped.

answered Jul 26, 2019 at 7:21

pappbence96

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Comments

Ninad · Accepted Answer · 2019-07-26 07:46:17Z

0

Result of while(lol.Length == i) condition is false due to which while loop is not getting executed and the last foreach loop is iterating through output array which is initialized but having null values in each element.

edited Jul 26, 2019 at 7:46

user11753067

answered Jul 26, 2019 at 7:37

Ninad

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