为什么在输入新的char值后while循环关闭

Question

Even if I enter the y value to be 'y', loop still closes. If I enter the value 'y', then it asks "Do you want to continue? Press y" and loop closes without asking to enter new y value.

char y = 'y';
while (y == 'y')
        {
            Console.WriteLine("Do you want to continue? Press y");
            y = (char)Console.Read(); //here the problem starts
         }

Answer 1

The Console.Read() blocks waiting for the input and terminates by pressing the enter key which appends a carriage return which is what it will read next time through the loop.This is one example of why Read() is not the best option when you need to redirect flow based on user input,instead you have other options:

First:Consume the rest of the input buffer by placing a readline after like this:

char y = 'y';
while (y == 'y')
{
    char temp;
    Console.WriteLine("Do you want to continue? Press y");
    y = (char)Console.Read();
    Console.ReadLine();   
}

Second: Simply replace Read() for ReadLine() altering the char to a string or if you want to keep the char like this:

y = (char)Console.ReadLine()[0];

Third:Using ReadKey():

ConsoleKeyInfo key = Console.ReadKey();
y = key.KeyChar;
Console.WriteLine();