Why can't I use an integer as a condition for a while loop in C#? [closed]

Answer 1

C# does not define an implicit conversion from int to bool. The while loop condition must be a bool.

You should use while(count-- != 0) instead.

In C# you have a bool type which accepts True or False as value. In C everything other than 0 is true and 0 indicates null. So you can have if (1) in C but 1 is not a logical expression in C#.

Answer 2

C# does not allow implicit casts from int to bool(ean). You should explicitly do that:

int count = 5;
while(count-- != 0)
{
    Console.WriteLine("Number : {0}", count);
}

Answer 3

While loop is using bool values to determine if continue loop or exit loop

In Your example count value is int and this cause error/

Simple refactorig is this:

            int count = 5;

            while (count != 0 )
            {
                count--;
                Console.WriteLine("Number : {0}", count);
            }

Now when count value will by 0 it will break loop

Answer 4

This will fix it!

while (count-- >= 0)//here showing an error
            {
                Console.WriteLine("Number : {0}", count);
            }