CODEWITHSUNDEEP
c#for-loop
user11614942
user11614942

Reputation:

I struggle with this for loop task

I'm trying to create this only with for loops:

1
12
123
1234
12345

My code:

for (int i = 1; i <=5; i++)
            {
                int counter = 1;
                Console.Write(counter);

                for(int j = 2; j <= i; j++)
                {
                    Console.Write(counter + 1);

                }
                Console.WriteLine();
            }

But I get this: 1
12
122
1222

and is there any way I can do it without the counter?

Upvotes: 0

Views: 65

Answers (2)

Pavel Anikhouski
Pavel Anikhouski

Reputation: 23208

You should update your internal for loop at little bit, remove counter variable and start a loop from j equals 1 till current value of i from external loop

for (int i = 1; i <= 5; i++)
{
    for (int j = 1; j <= i; j++)
    {
        Console.Write(j);
    }
    Console.WriteLine();
}

The reason, why your code doesn't work is that you set counter to 1 and didn't change its value anymore, and always use counter + 1, which prints 2

Upvotes: 2

Christopher
Christopher

Reputation: 9804

If you allow the use of a string, it can be done in 1 for loop:

string output = "";

for(int i = 1; i<5; i++){
  //Append new number
  output += i.ToString();
  //Output it
  Console.WriteLine(output);
}
Console.WriteLine();

I am the first to admit that is not the most robust solution. You may want to use a List<int> for output. But with those, the output code is way more complciated. So I choose the string shortcut here.

Upvotes: 1

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