how can I print out using 2 inputs from user and print out the numbers which is taken from user?

user_18974226 0
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like 10 and 20 is taken. I,ll to print out even user give me 20 and 10. I mean to print out in both way negative and positive!

Console.WriteLine("Enter a number for looping!"); int input = Convert.ToInt32(Console.ReadLine());

        Console.WriteLine("Enter a number for looping!");
        int input1 = Convert.ToInt32(Console.ReadLine());

        for (int i = input; i <= input1; i++)
        {              
            Console.WriteLine(i);
        }
    }
for-loop c#
1 Answers

From what I understand, this is what you want:

If user inputs 10 and 20, you want program to print out 10, 11, 12, ... , 20

If user inputs 20 and 10, you want program to print out 20, 19, 18, ... , 10

So the trick is to determine the "correct" for loop condition and increment for the 2 cases:

  1. input1 > input (ie, if user inputs 10 and then 20)
  2. input1 <= input (ie, if user inputs 20 and then 10)

To achieve that, you can do something like this:

Console.Write("Enter the starting number: ");
int input = Convert.ToInt32(Console.ReadLine());

Console.Write("Enter the ending number: ");
int input1 = Convert.ToInt32(Console.ReadLine());

// new loop condition and increment
Func<int, bool> loopCondition = (i) => (input1 > input) ? i <= input1 : i >= input1;
int loopIncrement = (input1 > input) ? +1 : -1;

for (int i = input; loopCondition(i); i += loopIncrement)
{
    Console.WriteLine(i);
}

where the only new idea is:

// new loop condition and increment
Func<int, bool> loopCondition = (i) => (input1 > input) ? i <= input1 : i >= input1;
int loopIncrement = (input1 > input) ? +1 : -1;
user_140790090
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