Boolean value ....

harish reddy

8y768Learn iOS Programming

int z = 10005;

bool a = Convert.ToBoolean(z);

Console.WriteLine(a);

Above code is giving output as :True . Pls explain why?

If i want as "False" what should i do?

I get usually confused with boolean data type or if any boolean is used in the program.

Pls explain easily for c sharp

4 Replies

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Manav Pandya8y ago
Accepted answer
Hello

You can write like this also :
//int d = a * c * 2 / Convert.ToInt32(Math.Pow((c - b), 2));
double d = a * c * 2 / (Math.Pow((c - b), 2));
And output will be same in both case like :
figure is hypotenuse
Reason :
Math.Pow() takes values of double , so "d" variable can be double

So that no need to use int as variable for that

Thanks
harish reddy8y ago
Also in this program:
static void Main(string[] args)
{
    int a = 8, b = 6, c = 10;
    int d = a * c * 2 / Convert.ToInt32(Math.Pow ((c - b), 2));
    if (d == (c = Convert.ToInt32(Math.Sqrt (a * a + b * b))) && c == 10)
    {
        Console.WriteLine("figure is hypotenuse");
    }
    else
    {
       Console.WriteLine("figure is square");
    }
}
1. why Outputiven convert.toint32 . I guess this is not neded? Pls explain
2. Out put is coming as below. Pls explain why?

figure is square
Suraj Kumar8y ago
Hello,
Everything other than 0 it gives the conversion in Boolean True. You can write condition for True and False.
A Boolean value occupies one byte of memory, as the following C# example shows. The example must be compiled with the /unsafe switch. The byte's low-order bit is used to represent its value. A value of 1 represents true; a value of 0 represents false.
For more info follow the link below
https://docs.microsoft.com/en-us/dotnet/csharp/language-reference/keywords/bool
Thanks
Manav Pandya8y ago
Hello

ToBoolean() converts integer to boolean based on equivalent value of provided int value

For Example if you write :
int z = -10005;
int zz = 10005;
bool a = Convert.ToBoolean(z);
bool aa = Convert.ToBoolean(zz);
Console.WriteLine(a); // Prints True
Console.WriteLine(aa); // Prints True
And if you write :
int zzz = 0;
bool aaa = Convert.ToBoolean(zzz);
Console.WriteLine(aaa); // Prints False
For reference :

https://msdn.microsoft.com/en-us/library/h0b8dwce(v=vs.110).aspx

Thanks