I want to return true in the below problem. What parameters should be passed instead of bold he first block?

Question

1.00/5 (1 vote)

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApplication2
{
    class Program
    {
        static void Main(string[] args)
        {
            A a = new A();
            bool ret = a.returnValue(true, true);
            Console.WriteLine(ret);
            Console.ReadLine();
        }
    }

    class A
    {
        public bool returnValue(bool a, bool b)
        {
            if (a && b)
                return false;

            if (a)
                if (b)
                    return true;

            return false;
        }
    }
}

What I have tried:

I have tried putting all the possible values for both a and b

Posted 12-Feb-17 22:52pm

Ankur_Garg

Updated 12-Feb-17 23:09pm

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F-ES Sitecore · Accepted Answer · 2017-02-12T23:03:00

Solution 1

Your function will never return true. For "return true" to be hit both a and b must be true. However if a and b are true then the first "if (a && b)" will be executed so it will return false from that.

Posted 12-Feb-17 23:03pm

F-ES Sitecore

Comments

Ankur_Garg 13-Feb-17 5:11am

This question was asked in an interview.

OriginalGriff · Accepted Answer · 2017-02-12T23:08:00

The problem is that your two conditions are the same:
if a and b are both true, your first condition returns false.
the second pair of conditions is the same thing: you only get to test b if a is true, and you only return true if b is also true. So to turn true, a and b must both be true - which they can't be as if they were, you have already exited from the method with a result of false!

I think you need to think a bit more about exactly what conditions you want to return true under - I can't suggest any as I don't know what you are trying to do with the method - it's name doesn't give me any clues about its logical purpose!