What is the truth value of the types in C#?

Welcome in!

Have you heard of 'truth value'?

Obviously yes, if you were a programmer or studying programming.

My topic today is "what is the truth value" and what are the truth values of types in C#.

check this out to get the detail of the method. https://learn.microsoft.com/en-us/dotnet/api/system.convert.toboolean?view=net-7.0

what is the type? (C#)

To begin with, we need to talk about what the values are. As we've already seen that they mean a type is a kind of 'certain kind',me being a smartmouth unintentionally.

We can say that int,string,float,double are some of types.To put it another way,our putting a certain type upon a value(being called constructor.) means clarification of the named value.For example you'll probably have no way to notice that 123 is just the number to be used for calculating or another number to be used for just showing information like number of a bus._In this example, if you'd like to multiply 123 by two or whatever even by it self.You cannot use a string type of 123(in C#).Instead,you have to use int type of 123.

what is the truth value?

so let's turn to the truth value again. Let's check the definition of the truth value first;The value telling if an argument is true or false. so how can it tells if it's true or not?

the truth value example

It's quite simple but it has different rules from type to type.

Firstly,for int(;integer) is false when int is 0 otherwise it's true. For example, when an integer variable is -1,-2 is 'true' as well. don't be confused about this point.

Secondly,float and double has almost the same rule as int's if they are 0 or 0.1,0.001,,and so like. they are false. Otherwise, they are true.

Thridly, string one has "true" or "false". However, I'd like to warn you that, unlike int,float and double type, if a string is neither "true" or "false", your code is going to fall through by an exception error. It would be confusing if you're not familiar with string type, but I'm sure you would find it quite intuitive and easy when you get used to this type.

Lastly, Boolean type has the true or false in a literal way. It means Boolean has either literally true or false. Take note as well that if it's neither 'true' or 'not', you put another literal into boolean type, your code is going to fall through as well like the case of rule of 'string'.

the codes

using System;

bool b = Convert.ToBoolean(Console.ReadLine());

if (Convert.ToBoolean(b))//when string b is "true" **regardless of upper or lower case**
{
   
    Console.WriteLine(b.ToString());
}
else if(!Convert.ToBoolean(b))//when string b is "false" **regardless of upper or lower case **
{
    Console.WriteLine(b);
}