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

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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

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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.

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4. 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 ("India");
            break;
    }

    if (val > 0)
        Console.Write ("B");
    else if (val < 0)
        Console.Write ("X");
}

XXXXXIndia
IndiaBBBBB
XXXXXIndiaBBBBB
BBBBBIndiaXXXXX

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5. 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

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6. Which of the following can be used to terminate a while loop and transfer control outside the loop?

    exit while
    continue
    exit statement
    break
    goto

1, 3
2, 4
3, 5
4, 5

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7. 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

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

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

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

A.     1, 3

2, 5
1, 4, 5
3, 4, 5
None of these

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9. Which of the following statements are correct?

    A switch statement can act on numerical as well as Boolean types.
    A switch statement can act on characters, strings and enumerations types.
    We cannot declare variables within a case statement if it is not enclosed by { }.
    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.
    All of the expressions of the for statement are not optional.

1, 2
2, 3
3, 5
4, 5

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10. 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

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C# - Control Instructions

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