Welcome to the Control Instructions MCQs Page

Dive deep into the fascinating world of Control Instructions with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Control Instructions, a crucial aspect of C# programming. In this section, you will encounter a diverse range of MCQs that cover various aspects of Control Instructions, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within C# programming.

Check out the MCQs below to embark on an enriching journey through Control Instructions. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of C# programming.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of Control Instructions. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Control Instructions MCQs | Page 2 of 9

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Q11.

The C#.NET code snippet given below generates ____ numbers series as output?


int i = 1, j = 1, val;
while (i < 25)
{
    Console.Write(j + " ");
    val = i + j;
    j = i;
    i = val;
}

Prime

Fibonacci

Palindrome

Odd

Discuss

Answer: (b).Fibonacci

Q12.

Which of the following statements are correct about the C#.NET code snippet given below?
if (age > 18 && no < 11)
a = 25;

1. The condition no < 11 will be evaluated only if age > 18 evaluates to True.
2. The statement a = 25 will get executed if any one condition is True.
3. The condition no < 11 will be evaluated only if age > 18 evaluates to False.
4. The statement a = 25 will get executed if both the conditions are True.
5. && is known as a short circuiting logical operator.

1, 3

2, 5

1, 4, 5

3, 4, 5

Discuss

Answer: (c).1, 4, 5

Q13.

Which of the following statements are correct?

1. A switch statement can act on numerical as well as Boolean types.
2. A switch statement can act on characters, strings and enumerations types.
3. We cannot declare variables within a case statement if it is not enclosed by { }.
4. The foreach statement is used to iterate through the collection to get the desired information and should be used to change the contents of the collection to avoid unpredictable side effects.
5. All of the expressions of the for statement are not optional.

1, 2

2, 3

3, 5

4, 5

Discuss

Answer: (a).1, 2

Q14.

What will be the output of the C#.NET code snippet given below?


int i = 2, j = i;
if (Convert.ToBoolean((i | j & 5) & (j - 25 * 1)))
    Console.WriteLine(1); 
else
    Console.WriteLine(0);

Compile Error

Run time Error

Discuss

Answer: (a).0

Q15.

Which of the following statements is correct about the C#.NET code snippet given below?


switch (id)
{
    case 6: 
        grp = "Grp B"; 
        break;
    
    case 13:
        grp = "Grp D";
        break;
    
    case 1:
        grp = "Grp A";
        break;
    
    case ls > 20:
        grp = "Grp E";
        break ;
    
    case Else:
        grp = "Grp F";
        break;
}

Compiler will report an error in case ls > 20 as well as in case Else.

There is no error in this switch case statement.

Compiler will report an error only in case Else.

Compiler will report an error as there is no default case.

Discuss

Answer: (a).Compiler will report an error in case ls > 20 as well as in case Else.

Q16.

Which of the following is another way to rewrite the code snippet given below?


int a = 1, b = 2, c = 0;
if (a < b) c = a;

int a = 1, b = 2, c = 0;
c = a < b ? a : 0;

int a = 1, b = 2, c = 0;
a < b ? c = a : c = 0;

int a = 1, b = 2, c = 0;
a < b ? c = a : c = 0 ? 0 : 0;

int a = 1, b = 2, c = 0;
a < b ? return (c): return (0);

Discuss

Answer: (a).int a = 1, b = 2, c = 0;
c = a < b ? a : 0;

Q17.

Which of the following statements are correct?

1. The switch statement is a control statement that handles multiple selections and enumerations by passing control to one of the case statements within its body.
2. The goto statement passes control to the next iteration of the enclosing iteration statement in which it appears.
3. Branching is performed using jump statements which cause an immediate transfer of the program control.
4. A common use of continue is to transfer control to a specific switch-case label or the default label in a switch statement.
5. The do statement executes a statement or a block of statements enclosed in {} repeatedly until a specified expression evaluates to false.

1, 2, 4

1, 3, 5

2, 3, 4

3, 4, 5

Discuss

Answer: (b).1, 3, 5

Q18.

Which of the following statements are correct about the C#.NET code snippet given below?

if (age > 18 || no < 11)
a = 25;

1. The condition no < 11 will get evaluated only if age > 18 evaluates to False.
2. The condition no < 11 will get evaluated if age > 18 evaluates to True.
3. The statement a = 25 will get evaluated if any one one of the two conditions is True.
4. || is known as a short circuiting logical operator.
5. The statement a = 25 will get evaluated only if both the conditions are True.

1, 4, 5

2, 4

1, 3, 4

2, 3, 5

Discuss

Answer: (c).1, 3, 4

Q19.

What will be the output of the code snippet given below?


int i;
for(i = 0; i<=10; i++)
{
    if(i == 4)
    {
        Console.Write(i + " "); continue;
    }
    else if (i != 4)
        Console.Write(i + " "); else
    break;
}

1 2 3 4 5 6 7 8 9 10

1 2 3 4

0 1 2 3 4 5 6 7 8 9 10

4 5 6 7 8 9 10

Discuss

Answer: (c).0 1 2 3 4 5 6 7 8 9 10

Q20.

Which of the following loop correctly prints the elements of the array?


char[ ] arr = new char[ ] {'k', 'i','C', 'i','t'} ;

do
{
Console.WriteLine((char) i);
}
while (int i = 0; i < arr; i++);

foreach (int i in arr)
{
Console.WriteLine((char) i);
}

for (int i = 0; i < arr; i++)
{
Console.WriteLine((char) i);
}

while (int i = 0; i < arr; i++)
{
Console.WriteLine((char) i);
}

Discuss

Answer: (b).foreach (int i in arr)
{
Console.WriteLine((char) i);
}

Page 2 of 9

Welcome to the Control Instructions MCQs Page

Control Instructions MCQs | Page 2 of 9

Explore more Topics under C# programming

Basics of C# Programming

Data Types,Variables and Operators

Classes and Objects

Arrays and Strings

Interfaces,Inheritance and Polymorphism

Functions and Subroutines

Indexers and Exception Handling

Console IO and Stream Classes

Delegates and Generics

LINQ

Collection Classes and Mathematical Functions

Namespaces and Preprocessors

Miscellaneous Topics

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