C# Classes and Objects Mcqs
Our collections of Multiple choice questions and answers focuses on study of C# Classes and Objects. These questions are chosen from a collection of most authoritative and best reference books on C# Classes and Objects. 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# Classes and Objects comprehensively.
C# Programming Mcqs
Computer MCQS
Sciences MCQS
2.
Which of the following statements is correct about the C#.NET code snippet given below?
namespace ConsoleApplication
{
class Sample
{
public int func()
{
return 1;
}
public Single func()
{
return 2.4f ;
}
}
class Program
{
static void Main(string[ ] args)
{
Sample s1 = new Sample();
int i;
i = s1.func();
Single j;
j = s1.func();
}
}
}
namespace ConsoleApplication
{
class Sample
{
public int func()
{
return 1;
}
public Single func()
{
return 2.4f ;
}
}
class Program
{
static void Main(string[ ] args)
{
Sample s1 = new Sample();
int i;
i = s1.func();
Single j;
j = s1.func();
}
}
}
3.
Which of the following ways to create an object of the Sample class given below will work correctly?
class Sample
{
int i;
Single j;
double k;
public Sample (int ii, Single jj, double kk)
{
i = ii;
j = jj;
k = kk;
}
}
class Sample
{
int i;
Single j;
double k;
public Sample (int ii, Single jj, double kk)
{
i = ii;
j = jj;
k = kk;
}
}
4.
Which of the following statements are correct about static functions? 1. Static functions can access only static data.
2. Static functions cannot call instance functions.
3. It is necessary to initialize static data.
4. Instance functions can call static functions and access static data.
5. this reference is passed to static functions.
1. Static functions can access only static data.
2. Static functions cannot call instance functions.
3. It is necessary to initialize static data.
4. Instance functions can call static functions and access static data.
5. this reference is passed to static functions.
5.
Which of the following statements is correct about constructors?
6.
Which of the following is the correct way to define the constructor(s) of the Sample class if we are to create objects as per the C#.NET code snippet given below?
Sample s1 = new Sample();
Sample s2 = new Sample(9, 5.6f);
Sample s1 = new Sample();
Sample s2 = new Sample(9, 5.6f);
7.
In which of the following should the methods of a class differ if they are to be treated as overloaded methods? 1. Type of arguments
2. Return type of methods
3. Number of arguments
4. Names of methods
5. Order of arguments
1. Type of arguments
2. Return type of methods
3. Number of arguments
4. Names of methods
5. Order of arguments
8.
Which of the following statements are correct about constructors in C#.NET? 1. Constructors cannot be overloaded.
2. Constructors always have the name same as the name of the class.
3. Constructors are never called explicitly.
4. Constructors never return any value.
5. Constructors allocate space for the object in memory.
1. Constructors cannot be overloaded.
2. Constructors always have the name same as the name of the class.
3. Constructors are never called explicitly.
4. Constructors never return any value.
5. Constructors allocate space for the object in memory.
9.
How many times can a constructor be called during lifetime of the object?
10.
Which of the following statements are correct about the C#.NET code snippet given below?
class Sample
{
static int i;
int j;
public void proc1()
{
i = 11;
j = 22;
}
public static void proc2()
{
i = 1;
j = 2;
}
static Sample()
{
i = 0;
j = 0;
}
}
class Sample
{
static int i;
int j;
public void proc1()
{
i = 11;
j = 22;
}
public static void proc2()
{
i = 1;
j = 2;
}
static Sample()
{
i = 0;
j = 0;
}
}
11.
Which of the following statements is correct?
12.
Which of the following statements are correct about static functions?
13.
What will be the output of the C#.NET code snippet given below?
namespace McqsMentorConsoleApplication
{
class Sample
{
static Sample()
{
Console.Write("Sample class ");
}
public static void Bits1()
{
Console.Write("Bits1 method ");
}
}
class MyProgram
{
static void Main(string[ ] args)
{
Sample.Bits1();
}
}
}
namespace McqsMentorConsoleApplication
{
class Sample
{
static Sample()
{
Console.Write("Sample class ");
}
public static void Bits1()
{
Console.Write("Bits1 method ");
}
}
class MyProgram
{
static void Main(string[ ] args)
{
Sample.Bits1();
}
}
}
14.
Which of the following statements is correct about constructors in C#.NET?
15.
What will be the output of the C#.NET code snippet given below?
namespace McqsMentorConsoleApplication
{
class Sample
{
public static void fun1()
{
Console.WriteLine("Bits1 method");
}
public void fun2()
{
fun1();
Console.WriteLine("Bits2 method");
}
public void fun2(int i)
{
Console.WriteLine(i);
fun2();
}
}
class MyProgram
{
static void Main(string[ ] args)
{
Sample s = new Sample();
Sample.fun1();
s.fun2(123);
}
}
}
namespace McqsMentorConsoleApplication
{
class Sample
{
public static void fun1()
{
Console.WriteLine("Bits1 method");
}
public void fun2()
{
fun1();
Console.WriteLine("Bits2 method");
}
public void fun2(int i)
{
Console.WriteLine(i);
fun2();
}
}
class MyProgram
{
static void Main(string[ ] args)
{
Sample s = new Sample();
Sample.fun1();
s.fun2(123);
}
}
}