C# Coding Interview Questions (Part – 3)

1. What happens when you compile and run the below program?

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public class Program     {             public static void Main(string[] args)         {           char x = 'X';            int i = 0;           Console.WriteLine (true  ? x : 0);           Console.WriteLine(false ? i : x);         }     }

Output:

88
88
 

2. Predict the output for below program.

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public class Program     {           public static void Main(string[] args)         {             int x = 1975;             int y = 2015;             x ^= y ^= x ^= y;             Console.WriteLine("x = " + x + "; y = " + y);         }     }

Output:

x = 0;Y=1975
 

3. What will be the output for below program?

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public class Program     {         public static bool isOdd(int i) {            return i % 2 == 1;        }          public static void Main(string[] args)         {              }     }

Output:

The program will be compiled successfully
 

4. Predict the output for below Program

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public class Program     {         public static void Main(string[] args)         {             String letters = "ABC";             char[] numbers = { '1', '2', '3' };             Console.WriteLine(letters + " easy as " + numbers);         }       }

Output:

ABC easy as System.Char[]
 

5. What will be the output for below program?

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public class Program     {       public static void Main(string[] args)         {             int i = 5;             int j = 6;          while (i <= j && j <= i && i != j) {             Console.WriteLine("Good Day !!");            }         }     }

Output:

The program will be compiled successfully with no output.
 

6. Predict the output for below Program.

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public class Program     {      public static void Main(string[] args)         {           Console.WriteLine ("iexplore:");            http://www.google.com;           Console.WriteLine(":maximize");         }     }

Output:

iexplore:
:maximize
 

7. What will be the output for below program?

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public class Program     {      public static void Main(string[] args)         {          int i=5;          while (i != i + 0) {              Console.WriteLine("Hello");            }         }     }

Output:

The program will be compiled successfully with no output
 

8. Predict the Output for below program

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public class Program     {         static void Main(string[] args)         {             work();             Console.WriteLine("Hello");         }         private static void work()         {             try             {                 work();             }             finally             {                 work();             }         }     }

Output:

StackOverflowException
 

9. What will be the output for below program?

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public class Program     {         public static void Main(string[] args)         {             Program Puzzler = null;             Console.WriteLine(Program.get());         }         private static String get()         {             return "i am a C# puzzler";         }     }

Output:

i am a C# puzzler
 

10. Predict the output for below program?

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public class Program     {         public static void Main(string[] args)         {             Double i = Double.NaN;             while (i != i)             {                 Console.WriteLine("Hello");             }         }     }

Output:

It will be an infinite loop with ‘Hello’