csharp Operator Questions & Answers

Question 1: What will be the output of the following program?

public static void Main(string[] args)
{
    int a = 1, b = 2, c = 3;
    
    Console.Write(a+b*c);
    Console.Write (a+(b*c));
    Console.Write ((a*b)+(b*c));   
    Console.Write ((a*b)+(b*c)-c);   
}

Question 2: What will be the output of the following program?

public static void Main(string[] args)
 {
    int x = 2, y = 6, z;
    z=  x * ( y + x) / (y - x) + 10;
    Console.Write(z);
}

Question 3: What will be the output of the following program?

public static void Main(string[] args)
{
    int a = 2;
	   
 	Console.Write( ++a);  
	Console.Write(a++);
	Console.Write( a);  
}
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Question 4: What will be the output of the following program?

class Program
{
    static void Main()
    {
        Person p = null;
        var name = p?.FirstName ?? "Unknown" + p?.LastName ;

        Console.Write(name);
    }
}

class Person
{
    public string FirstName { get; set; }
    public string LastName { get; set; }
}

Question 5: output

IList numbers = null;
Console.Write(numbers?[0]);