csharp practice bits

What will be the output of the following C# code?

1. static void Main(string[] args)

2. {

3. int i;

4. for (i = 0; ; )

5. {

6. Console.WriteLine("hello");

7. }

8. Console.ReadLine();

9. }

• No output
  
  
  

• hello

• hello printed infinite times

• Code will give error as expression syntax

What will be the output of the following C# code?

1. static void Main(string[] args)

2. {

3. float f;

4. for (f = 0.1f; f <= 0.5; f += 1)

5. Console.WriteLine( ++f );

6. Console.ReadLine();

7. }

• 1.1
  

• 0.1

• 0.1 0.2 0.3 0.4 0.5

• None of the mentioned

What will be the output of the following C# code?

1. static void Main(string[] args)

2. {

3. int I, X;

4. for (I = 1; I <= (9 % 2 + I); I++)

5. {

6. X = (I 3 + I 2) / I;

7. Console.WriteLine(X);

8. }

9. Console.ReadLine();

10. }

• Output of code is 5 10
  

• Output is 5 5 5 5

• Print 5 infinite times

• None of the mentioned

What will be the output of the following C# code?

1. static void Main(string[] args)

2. {

3. int I, J = 0;

4. for (I = 1; I < 10; ) ;

5. {

6. J = J + I;

7. I += 2;

8. }

9. Console.WriteLine("Sum of first 10 even numbers is:"+J);

10. Console.ReadLine();

11. }

• 1 2 3 4 5 6 7 8 9
  

• 25

• 1

• Run time error

What will be the output of the following C# code?

1. static void Main(string[] args)

2. {

3. int i = 5;

4. for (; Convert.ToBoolean(Convert.ToInt32(i)); Console.WriteLine(i--)) ;

5. Console.ReadLine();

6. }

• 4 3 2 1
  

• 3 2 1

• 5 4 3 2 1

• 2 1

What will be the output of the following C# code?

1. static void Main(string[] args)

2. {

3. int i, s = 0;

4. for (i = 1; i <= 10; s = s + i, i++);

5. {

6. Console.WriteLine(s);

7. }

8. Console.ReadLine();

9. }

• Code report error
  

• Code runs in infinite loop condition

• Code gives output as 0 1 3 6 10 15 21 28 36 45

• Code give output as 55

Which statement is correct among the mentioned statements?
i. The for loop works faster than a while loop
ii. for( ; ; )implements an infinite loop

• Only i is correct
  

• Only ii is correct

• Both i and ii are correct

• Both i and ii are incorrect

What will be the output of the following C# code?

1. {

2. int i;

3. Console.WriteLine("Hi");

4. for (i = 1; i <= 10; i++)

5. Program.Main(args);

6. Console.ReadLine();

7. }

• Prints ‘Hi’ for one time
  

• Prints ‘Hi’ for infinite times

• Stack overflow exception Condition generated

• None of the mentioned

Which of the C# code should be added to get the following output?

1. * * * * *

2. * * * *

3. * * *

4. * *

5. *

6. static void Main(string[] args)

7. {

8. int i,j;

9. /* Add code here */

10.  

11. }

• for (i = 0;i &lt;= 4; i++) { for(j = 0;j &lt;= 4; j++) console.WriteLine("*"); console.WriteLine("\n"); }

• for (i = 0;i &lt;= 4; i++) { for(j = 4;j &lt;= i; j--) console.WriteLine("*"); console.WriteLine("\n"); }

• for (i = 0;i &lt;= 4; i++) { for (j = i;j &lt;= 4; j++) console.WriteLine("*"); console.WriteLine("\n"); }

• for ( i = 0;i &lt;= 4; i++) { for (j = 0;j &lt;= i; j++) console.WriteLine("*"); console.WriteLine("\n"); }

What will be the output of the following C# code?

1. static void Main(string[] args)

2. {

3. int i;

4. for (i =-3; i <= 3; i++)

5. {

6. switch (i)

7. {

8. case 0:

9. Console.WriteLine("zero");

10. break;

11. }

12. if (i > 0)

13. Console.WriteLine("A");

14. else if (i < 0)

15. Console.WriteLine("B");

16. }

17. Console.ReadLine();

18. }

• B B zero A A A
  

• B zero A A A

• B B B zero A A A

• A A A zero B B B