I have written this function to use it into another class, but code generates an error and says,
**Not all code paths return a value.**
I also tried to search the solution regarding this problem and most of the answers were irrelevant to the actual problem.
Hoping to bump into the logical understanding for this kind of same errors.

```
using System;

namespace Practice
{
    class ContinueAgain
    {
        public int Continue()    //    (Not all code paths return a value)
        {
            rerun:
            try {

                char chAgain;

                //  user guiding message and then taking input
                Console.WriteLine("\nAgain? (y/n)\n");
                chAgain = char.Parse(Console.ReadLine());

                //  filtering the condition if the user wants to continue or not
                //  exiting out of the method if user selects 'Y'/'y'
                if (chAgain == 'y' || chAgain == 'Y')   //  if block begins
                {
                    return 1;
                }

                //  exiting out of the method if user selects 'N'/'n'
                else if (chAgain == 'n' || chAgain == 'N')
                {
                    Console.WriteLine("\nThank you for using :)\n");
                    return 0;
                }

                // printing user message if user enters any input apart from the asked input
                if(chAgain!='y' || chAgain!='Y' || chAgain!='n' || chAgain!='N')
                {
                    Console.WriteLine("\nThis input in invalid\n");
                    goto rerun;
                }
                #endregion if block 4 - ends
            }   //  try block ends

            catch (Exception e)
            {
                Console.WriteLine(e.Message);
            }
        }
    }
}

```

Would like to know what's causing or triggering this error event.