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1-
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Which of the following statements are correct?
- String is a value type.
- String literals can contain any character literal including escape sequences.
- The equality operators are defined to compare the values of string objects as well as references.
- Attempting to access a character that is outside the bounds of the string results in an IndexOutOfRangeException.
- The contents of a string object can be changed after the object is created.
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A -
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1, 3
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B -
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3, 5
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C -
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2, 4
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D -
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1, 2, 4
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2-
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Which of the following is the correct way to find out the index of the second 's' in the string "She sells sea shells on the sea-shore"?
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A -
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String str = "She sells sea shells on the sea-shore";
int i;
i = str.SecondIndexOf("s");
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B -
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String str = "She sells sea shells on the sea-shore";
int i, j;
i = str.FirstIndexOf("s");
j = str.IndexOf("s", i + 1);
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C -
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String str = "She sells sea shells on the sea-shore";
int i, j;
i = str.IndexOf("s");
j = str.IndexOf("s", i + 1);
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D -
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String str = "She sells sea shells on the sea-shore";
int i, j;
i = str.LastIndexOf("s");
j = str.IndexOf("s", i - 1);
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3-
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Which of the following will be the correct output for the C#.NET program given below?
namespace IndiabixConsoleApplication
{
struct Sample
{
public int i;
}
class MyProgram
{
static void Main()
{
Sample x = new Sample();
x.i = 10;
fun(x);
Console.Write(x.i + " ");
}
static void fun(Sample y)
{
y.i = 20;
Console.Write(y.i + " ");
}
}
}
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A -
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10 10
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B -
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20 10
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C -
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20 20
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D -
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None of the above
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4-
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Which of the following is the correct way to define a variable of the type struct Emp declared below?
struct Emp
{
private String name;
private int age;
private Single sal;
}
- Emp e(); e = new Emp();
- Emp e = new Emp;
- Emp e; e = new Emp;
- Emp e = new Emp();
- Emp e;
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A -
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1, 3
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B -
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2, 5
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C -
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4, 5
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D -
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1, 2, 4
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5-
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Which of the following statements is correct about the C#.NET code snippet given below?
class Trial
{
int i;
Decimal d;
}
struct Sample
{
private int x;
private Single y;
private Trial z;
}
Sample ss = new Sample();
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A -
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Trial object referred by z will be created on the stack.
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B -
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z will be created on the heap.
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C -
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Both ss and z will be created on the heap.
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D -
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ss will be created on the stack.
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6-
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How many bytes will the structure variable samp occupy in memory if it is defined as shown below?
class Trial
{
int i;
Decimal d;
}
struct Sample
{
private int x;
private Single y;
private Trial z;
}
Sample samp = new Sample();
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A -
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20 bytes
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B -
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12 bytes
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C -
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8 bytes
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D -
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16 bytes
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7-
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Which of the following will be the correct result of the statement b = a in the C#.NET code snippet given below?
struct Address
{
private int plotno;
private String city;
}
Address a = new Address();
Address b;
b = a;
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A -
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All elements of a will get copied into corresponding elements of b.
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B -
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Address stored in a will get copied into b.
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C -
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Once assignment is over a will get garbage collected.
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D -
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Once assignment is over a will go out of scope, hence will die.
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8-
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Which of the following statements are correct?
- A struct can contain properties.
- A struct can contain constructors.
- A struct can contain protected data members.
- A struct cannot contain methods.
- A struct cannot contain constants.
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A -
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1, 2
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B -
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3, 4
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C -
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1, 2, 4
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D -
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3, 5
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9-
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When would a structure variable get destroyed?
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A -
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When no reference refers to it, it will get garbage collected.
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B -
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Depends upon whether it is created using new or without using new.
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C -
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When it goes out of scope.
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D -
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Depends upon the Project Settings made in Visual Studio.NET.
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10-
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Which of the following statements is correct about the C#.NET code snippet given below?
struct Book
{
private String name;
private int noofpages;
private Single price;
}
Book b = new Book();
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A -
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The structure variable b will be created on the heap.
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B -
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We can add a zero-argument constructor to the above structure.
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C -
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When the program terminates, variable b will get garbage collected.
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D -
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The structure variable b will be created on the stack.
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