C# Control Instructions Mcqs

Our collections of Multiple choice questions and answers focuses on study of C# Control Instructions. These questions are chosen from a collection of most authoritative and best reference books on C# Control Instructions. Our aim is to prepare an individual for competitive exams like NTS, GAT, ECAT, University and College entrance exams and various tests and job interviews. One should practice our Mcqs to assimilate C# Control Instructions comprehensively.

  1. Home
  2. »
  3. Languages
  4. »
  5. Programming Languages Mcqs
  6. »
  7. C# Programming Mcqs
  8. »
  9. Control Instructions Mcqs

C# Programming Mcqs

Computer MCQS

Sciences MCQS

1.
What does the following C#.NET code snippet will print? 
int i = 0, j = 0; 

label:
    i++;
    j+=i;
if (i < 10)
{
    Console.Write(i +" ");
    goto label; 
}

Prints 1 to 9

Prints 0 to 8

Prints 2 to 8

Prints 2 to 9

Answer & Solution Discus Likes (0)

2.
Which of the following is the correct output for the C#.NET program given below? 
int i = 20 ;
for( ; ; )
{
    Console.Write(i + " "); 
    if (i >= -10)
        i -= 4; 
    else 
        break;
}

20 16 12 84 0 -4 -8

20 16 12 8 4 0

20 16 12 8 4 0 -4 -8 -12

16 12 8 4 0

Answer & Solution Discus Likes (0)

3.
Which of the following statements is correct?

It is not possible to extend the if statement to handle multiple conditions using the else-if arrangement.

The switch statement can include any number of case instances with two case statements having the same value.

A jump statement such as a break is required after each case block excluding the last block if it is a default statement.

The if statement selects a statement for execution based on the value of a Boolean expression.

Answer & Solution Discus Likes (0)

4.
What is the output of the C#.NET code snippet given below? 
namespace McqsMentorConsoleApplication
{
    public enum color
    { red, green, blue };
    
    class SampleProgram
    {
        static void Main (string[ ] args)
        {
            color c = color.blue;
            switch (c)
            {
                case color.red:
                    Console.WriteLine(color.red); 
                    break; 
                
                case color.green: 
                    Console.WriteLine(color.green); 
                    break; 
                
                case color.blue: 
                    Console.WriteLine(color.blue); 
                    break; 
            } 
        } 
    } 
}

Red

Blue

0

1

Answer & Solution Discus Likes (0)

5.
Which of the following is the correct way to rewrite the following C#.NET code snippet given below? 
int i = 0; 
do
{
    Console.WriteLine(i);
    i+ = 1; 
} while (i <= 10);


A. 
int i = 0; 
do
{
    Console.WriteLine(i);
} until (i <= 10);

B. 
int i;
for (i = 0; i <= 10 ; i++)
    Console.WriteLine(i);

C. 
int i = 0; 
while (i <= 11)
{
    Console.WriteLine(i);
    i += 1; 
}

D. 
int i = 0;
do while ( i <= 10)
{
    Console.WriteLine(i); 
    i += 1;
}

A

B

C

D

Answer & Solution Discus Likes (0)

6.
What will be the output of the C#.NET code snippet given below? 
int val;
for (val = -5; val <= 5; val++)
{
    switch (val)
    {
        case 0:
            Console.Write ("CompSci"); 
            break;
    }
    
    if (val > 0)
        Console.Write ("B"); 
    else if (val < 0)
        Console.Write ("X");
}

XXXXXCompSci

CompSciBBBBB

XXXXXCompSciBBBBB

BBBBBCompSciXXXXX

Answer & Solution Discus Likes (0)

7.
What will be the output of the C#.NET code snippet given below? 
char ch = Convert.ToChar ('a' | 'b' | 'c'); 
switch (ch)
{
    case 'A': 
    case 'a':
    Console.WriteLine ("case A | case a");
    break;
    
    case 'B': 
    case 'b':
    Console.WriteLine ("case B | case b");
    break;
    
    case 'C':
    case 'c':
    case 'D':
    case 'd':
    Console.WriteLine ("case D | case d");
    break;
}

Case A | case a

Case B | case b

Case D | case d

Compile Error

Answer & Solution Discus Likes (0)

8.
Which of the following is the incorrect form of Decision Control instruction?

If (Condition1)
{// Some statement}

If (Condition1) {// Some statement}
else {// Some statement}

If (Condition1) {// Some statement}
else {// Some statement}
else if ( Condition2){ //Some statement }

If ( Condition1 ) {// Some statement}
else if ( Condition2 ) {// Some statement}
else { // Some statement }

Answer & Solution Discus Likes (0)

9.
Which of the following code snippets are the correct way to determine whether a is Odd or Even? 
1.
int a;
String res; 
if (a % 2 == 0)
    res = "Even"; 
else 
    res = "Odd";

2.
int a; 
String res; 
if (a Mod 2 == 0) 
    res = "Even"; 
else
    res = "Odd";

3.
int a;
Console.WriteLine(a Mod 2 == 0 ? "Even": "Odd");

4.
int a; 
String res;
a % 2 == 0 ? res = "Even" : res = "Odd";
Console.WriteLine(res);

1, 3

1 Only

2, 3

4 Only

Answer & Solution Discus Likes (0)

10.
Which of the following can be used to terminate a while loop and transfer control outside the loop?
1. exit while
2. continue
3. exit statement
4. break
5. goto

1, 3

2, 4

3, 5

4, 5

Answer & Solution Discus Likes (0)

11.
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

Answer & Solution Discus Likes (0)

12.
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

Answer & Solution Discus Likes (0)

13.
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

Answer & Solution Discus Likes (0)

14.
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);

0

1

Compile Error

Run time Error

Answer & Solution Discus Likes (0)

15.
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.

Answer & Solution Discus Likes (0)

Computer MCQS

Sciences MCQS

0Shares
0
Scroll to Top