Programming Language
‏إظهار الرسائل ذات التسميات Programming Language. إظهار كافة الرسائل
‏إظهار الرسائل ذات التسميات Programming Language. إظهار كافة الرسائل

MCQ of C# with Answer set-3

6:42 م اضافة تعليق

MCQs in C#
MCQs in C#
1. The general syntax for declaring an enumeration in C# is .

A) <enum_name> enum {enum list};

B) enum <enum_name> {enum list};

C) <enum_type> enum <enum_name> {enum list};

D) None of the above


2. State True or False for the difference between classes and structures.

i) Structures do not support inheritance

ii) Structure can have default constructor

iii) Classes are reference types and structures are value types.

A) i- True, ii- False, iii-True

B) i- False, ii- True, iii-True

C) i-True, ii-True, iii-False

D) i- False, ii- False, iii-True


3. The various techniques provided by C# to implement static polymorphism is/are

i) Function overloading

ii) Static overloading

iii) Operator overloading

A) i and ii only

B) i and iii only

C)  ii and iii only

D) All i, ii, iii


4. Operator overloading is creating functions with special names, the keyword ........................ operator followed by the symbol for the operator being defined.

A) Overload

B) Update

C) Operator

D) Implement


5. Match the following operators in C# with their description for the operator overload property.

i) +, -, !, ~, ++, --            a) cannot be overloaded

ii) ==, !=, <, >, <=, >=    b) cannot be overloaded directly

iii) &&, ||                         c) take one operand and can be overloaded

iv) =, ., ? :, ->                  d) can be overload

A) i-d, ii-c, iii-a, iv-b

B) i-b, ii-c, iii-a, iv-d

C) i-c, ii-d, iii-b, iv-a

D) i-a, ii-c, iii-d, iv-b


6. Match the following preprocessor directives in C# with their description?

i) #elif                      a) specifies the end of conditional directive

ii) #endif                   b) allows to undefine a symbol.

iii) #undef                  c) allows creating compound conditional directive

A) i-b, ii-c, iii-a

B) i-b, ii-c, iii-a

C) i-c, ii-a, iii-b

D) i-a, ii-c, iii-b


7. The operator symbols can be used for the conditional directives in C# is/are.

i) = = (equality)         ii) ! = (inequality)            iii) && (and)

iv) || (or)                   v) >= (grater than or equal to)

A) i, ii  iii and iv only

B) i, iii and iv only

C) i, ii, iii and v only

D) All i, ii, iii, iv and v


8. Conditional directives are beginning with a ...................... directive and must be terminated with ....................... directive and must be terminated with .............. directive.

A) #if, #endif

B) #start, #end

C) #elif, #endelif

D) Both A and B


9. The keywords provided by C# for exception handling are.

i) try             ii) catch             iii) finally             iv) tryif             v) throw

A) i, ii and iii and iv only

B) ii, iii and iv and v only

C) i, ii and iii and v only

D) All i, ii, iii and iv


10. The ................... block is used to execute a given set of statement, whether the exception is thrown or not.

A) try

B) tryif

C) finally

D) throw


Answers:

1.   B) enum <enum_name> {enum list};
2.   A) i- True, ii- False, iii-True
3.   B) i and iii only
4.   C) Operator
5.   C) i-c, ii-d, iii-b, iv-a
6.   C) i-c, ii-a, iii-b
7.   A) i, ii and iii and iv only
8.   A) #if, #endif
9.   C) i, ii and iii and v only
10. C) finally


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Objective Questions of C# with Answer set-2

9:30 ص اضافة تعليق
C# MCQs
Objective Questions in C#

1. In C# variables are categorized into ..........

i) Value types          ii) Reference types              iii) initial types             iv) pointer types

A) i, ii and iii only

B) ii, iii and iv only

C) i, ii and iv only

D) All i, ii, iii and iv


2. Value type variables can be assigned a value directly which are derived from the class

A) System.value

B) System.ValueType

C) General.ValueType

D) Variable.ValueType


3. The various data types used in C# are

i) Integral Type           ii) Floating point types

iii) Boolean types       iv) Nullable types

A) i, ii and iii only

B) ii, iii and iv only

C) i, iii and iv only

D) All i, ii, iii and iv


4. The built-in operators that are provided by C# programming language are...

i) Arithmetic operators          ii) Logical operators

iii) Bitwise operators             iv) Assignment operators

A) i, ii and iii only

B) ii, iii and iv only

C) i, iii and iv only

D) All i, ii, iii and iv


5. Match the different Bitwise operators supported by C# with their descriptions.

i) &                   a) Binary Left Shift Operator

ii) ^                   b) Binary Right Shift Operator

iii) <<               c) Binary XOR operator

iv) >>               d) Binary AND operator

A) i-d, ii-c, iii-a, iv-b

B) i-b, ii-c, iii-a, iv-d

C) i-c, ii-a, iii-b, iv-d

D) i-a, ii-c, iii-d, iv-b



6. What will be the value of the following expression if x=10?

A) 25

B) -5

C) 10

D) 15


7. While passing parameter to a method ................ copies the actual value of an argument into the formal parameter of the function.

A) Output Parameter

B) Value Parameter

C) Reference Parameter

D) Initial Parameter


8. In C# methods can be defined by using which of the following syntex?

A) <Method Name> (parameter list) { Method body }

B) <Method Name> <Return Type> <Access Specifier> (parameter list) { Method body }

C) <Return Type> <Method Name> <Access Specifier> (parameter list) { Method body }

D) None of the above


9. Which of the following are the methods to assign values to an array?

i) double [ ] score = {234.0, 214.5, 572.0};

ii) int [ ] marks = new int [3] {33, 45, 67};

iii) int [ ] marks = new int [ ] {33, 45, 67};

A) i and ii only

B) ii and iii only

C) i and iii only

D) All i, ii, iii


10. State whether the following statements are True or False.

i) Unlike classes, structures cannot inherit other structures or classes.

ii) A structure can implement one or more interfaces.

iii) Structure members can be specified as abstract, virtual or protected.

A) i- True, ii- False, iii-True

B) i- False, ii- True, iii-True

C) i-True, ii-True, iii-False

D) i- False, ii- False, iii-True


Answers:

1.   C) i, ii and iv only
2.   B) System.ValueType
3.   D) All i, ii, iii and iv
4.   D) All i, ii, iii and iv
5.   A) i-d, ii-c, iii-a, iv-b
6.   A) 25
7.   B) Value Parameter
8.   A)<Access Specifier><Return Type> <Method Name> (parameter list) {Method body}
9.   D) All i, ii, iii
10. C) i-True, ii-True, iii-False


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Solved Objective Questions of C# set-1

Solved Objective Questions of C# set-1

3:55 م اضافة تعليق

1. Which of the following is not the component of .Net framework?

A) Common Language Run time(CLR)

B) .Net Framework Library.

C) Component Network

D) Windows Workflow Foundation (WF)


2. Following is/are the Integrated Development Environment (IDE) for C#.

A) Visual Studio 2010 (VS)

B) Visual Web Developer

C) Both A and B
Visual overview of the Common CLR Language Inf...
Visual overview of the Common CLR Language Infrastructure, and how the components relate to each other. Converted to SVG from PNG version, originally by Foofy from English Wikipedia. (Photo credit: Wikipedia)

D) Only A


3. A C# program may consist of the following parts.

i) Namespace declaration

ii) Class methods

iii) A main method

iv) Statement & Expressions

A) i, ii and iii only

B) ii, iii and iv only

C) i, iii and iv only

D) All i, ii, iii and iv


4. State True or False for naming class in C#.

i) The class name can be a C# keyword.

ii) A name must begin with a letter, can be followed by letters, digits and underscore.

A) i- True, ii- False

B) i- False, ii- True

C) i-True, ii-True

D) i- False, ii- False


5. ...................... is a name which can be used to identify a class, variable, function etc.

A) Keyword

B) Reference

C) Identifier

D) Object


6. .................... conversions are performed by C# compiler itself and ..................... conversions are performed by users by using predefined functions.

A) Implicit type, Explicit type

B) Explicit type, Implicit type

C) External type, Internal type

D) Internal type, External type


7. A variable can be declared by using which of the following syntax?

A) <variable_list> <data_type>;

B) <variable_list>, <data_type>

C) <data_type> <variable_list>

D) <data_type> <variable_list>;


8. Match the following.

i) *                  a) returns the address of an variable

ii) ? :                b) point to variable

iii) &                c) conditional expression

A) i-a, ii-b, iii-c

B) i-b, ii-c, iii-a

C) i-c, ii-a, iii-b

D) i-a, ii-c, iii-b


9. C# supports the following types of access specifiers.

i) public ii) friend iii) private iv) protected v) internal

A) i, ii, iii and iv only

B) i, iii, iv and v only

C) i, ii, iv and v only

D) All i, ii, iii, iv and v


10. ........................ access specifier allows a class to expose it's member variables and member functions to other functions and objects in the current application.

A) Internal

B) Protected

C) Private

D) Public


Answers:

1.  C) Component Network
2.  C) Both A and B
3.  D) All i, ii, iii  and iv
4.  B) i- False, ii- True
5.  C) Identifier
6.  A) Implicit type, Explicit type
7.  D) <data_type> <variable_list>;
8.  B) i-b, ii-c, iii-a
9.   B) i, iii, iv and v only
10. A) Internal


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How to write a program in C using for Loop?

8:12 ص اضافة تعليق

For loop is the most popular looping structure in C programming language. It does required number of repetitions for the execution of block of codes. The For Loop allows us to specify three things about a loop in a single line, which are initialise counter, test counter and increment counter. Initialise counter sets a loop counter to an initial value, test counter test the loop counter to determine whether it's value has reached the number of repetitions desired and increment counter increase the value of loop counter each time the program segment within the loop has been executed. Here I have illustrated How to write a program in C using for Loop.

The general form of for statement is as follows.


for(initialise counter; test counter; increment counter)
{
block of codes
}


The diagram for the for loop is as follows.

write a program in C using for Loop
For-Loop

For example following is the program code in C to calculate simple interest. 


/*calculation of simple interest for 3 sets of p,n and r */
#include <stdio.h>
 int main()
{
int p,n,count;
float r,si;
for(count=1; count<=3; count=count+1)
 {
 printf("Enter values of p,n and r");
 scanf("%d %d%f", &p,&n,&r);
 si=p*n*r/100;
printf(simple interest=%f\n",si);
 }
 return 0;
 }


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Solved MCQ of C set-1

Solved MCQ of C set-1

6:56 ص اضافة تعليق

1. C language has been developed by
A) Martin Richards
B) Bijarne Stroustrup
C) Dennis Ritche
D) Ken Thompson

2. int[ ] ={5,6,7,8,9} What is the value of a[3]?
A) 9
B) 8
C) 7
D) 6


3. C can be used on
A) Only MS-Dos operating System
B) Only Linux operating system
C) Only Windows operating system
D) All of the above


4. Float a[15], what is the size of array?
A) 17
B) 14
C) 15
D) 16

5. C programs are converted into machine language with the help of
A) An Editor
B) A complier
C) An operating system
D) None of the above

6. Array is
A) Primary data type
B) Pointer data type
C) Heterogeneous data type
D) Homogenous data type

7. Which of the following is allowed in a C Arithmetic Instruction?
A) [ ]
B) { }
C) ( )
D) None of the above

8. To accept 100 different values into the array we require
A) Loop
B) If condition
C) Function
D) Structure

9. If a is an integer variable, a=7/3; will return a value
A) 2.5
B) 3
C) 0
D) 2

10. Pointer holds
A) Value of variable
B) Address of variable
C) Value and address of variable
D) Always null

Answers:
1. C) Dennis Ritche
2. B) 8
3. D) All of the above
4. C) 15
5. B) A complier
6. D) Homogenous data type
7. C) ( )
8. A) Loop
9. D) 2
10. B) Address of variable

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Solved MCQ of Java Set-1

Solved MCQ of Java Set-1

11:13 ص اضافة تعليق

1. Java programs are
A) Faster than others
B) Platform independent
C) Not reusable
D) Not scalable

2. Java has its origin in
A) C programming language
B) PERRL
C) COBOL
D) Oak programming language


3. Which one of the following is true for Java
A) Java is object oriented and interpreted
B) Java is efficient and faster than C
C) Java is the choice of everyone.
D) Java is not robust.


4. The command javac is used to
A) debug a java program
B) compile a java program
C) interpret a java program
D) execute a java program

5. Java servlets are an efficient and powerful solution for creating ………….. for the web.
A) Dynamic content
B) Static content
C) Hardware
D) Both a and b

6. Filters were officially introduced in the Servlet ……………… specification.
A) 2.1
B) 2.3
C) 2.2
D) 2.4

7. Which is the root class of all AWT events
A) java.awt.ActionEvent              
B) java.awt.AWTEvent
C) java.awt.event.AWTEvent
D) java.awt.event.Event

8. OOP features are
i) Increasing productivity                              ii) Reusability
iii) Decreasing maintenance cost               iv) High vulnerability
A) 1,2 & 4
B) 1,2 & 3
C) 1, 2 & 4
D) none of the above

9. break statement is used to
i) get out of method                                       ii) end aprogram
iii) get out of a loop                                         iv) get out of the system
A) 1 & 2
B) 1,2 & 3
C) 1 & 3
D) 3

10. Native – protocol pure Java converts ……….. into the ………… used by DBMSs directly.
A) JDBC calls, network protocol
B) ODBC class, network protocol
C) ODBC class, user call
D) JDBC calls, user call

Answers:
1. B) Platform independent
2. D) Oak programming language
3. A) Java is object ...... interpreted
4. B) compile a java program
5. A) Dynamic content
6. B) 2.3
7. B) java.awt.AWTEvent
8. B) 1,2 & 3
9. D) 3
10. A) JDBC calls, ......protocol


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MCQ of C++ with answer Set-2

MCQ of C++ with answer Set-2

2:45 م اضافة تعليق

1. The ……………. Operator is known as insertion operator.
A) >>
B) >
C) <<
D) <

2. State True or False.
i) A satic function can have access to only other static members (functions or variables) declared in the same class.
ii) A static member function can be called using the class name (instead of its objects)
A) True, True
B) True, False
C) False, True
D) False, False

3. Which of the following condition is true for an object used as a function argument?
i) A copy of the entire objects is passed to the function.
ii) Only the address of the object is transferred to the function.
A) Only i
B) Only ii
C) Both i and ii
D) None of them


4. …………… enable us to hide, inside the object, both the data fields and the methods that act on that data.
A) Encapsulation
B) Polymorphism
C) Inheritance
D) Overloading

5. Which of the following is/ are the characteristics of friend function.
A) It is not in the scope of the class to which it has been declared as friend.
B) It can invoke like a normal function without the help of any object.
C) Usually, it has the objects as arguments.
D) All of the above.

6. The dereferencing operator ………….. is used to access a member when we use pointers to both the object and the member.
A) ->*
B) .*
C) Any of the above
D) None of the above

7. A ………………. Is a class whose instances themselves are classes.
A) Subclass
B) Abstract Class
C) Meta Class
D) Object Class

8. The dereferencing operator ……… is used when the object itself is used width in the member pointer.
A) ->*
B) .*
C) Any of the above
D) None of the above

9. A constructor that accepts no parameters is called the ……………….
A) Paramless constructor
B) No parameter constructor
C) Default constructor
D) Argumentless constructor

10. Automatic initialization of object is carried out using a special member function called …………
A) Friend
B) Casting
C) Reference Parameter
D) Constructor

11. Which of the following characteristics of constructor are true.
i) They should be declared in the public section.
ii) They are invoked automatically when the objects are created.
iii) They do not have return type and void also.
iv) We cannot refer their address.
v) Constructors cannot virtual.
A) Only i, ii, iii and v
B) Only ii, iii, iv, and v
C) Only i, iii, iv and v
D) All i, ii, iii, iv and v

12. A ……………. takes a reference to an object of the same class as itself as an argument.
A) Reference constructor
B) Copy Constructor
C) Self Constructor
D) None of the above

13. State True or False
i) A destructor never takes any argument nor does it return any value.
ii) It releases memory space for future use.
A) True, True
B) True, False
C) False, True
D) False, False

14. Which of the following operates cannot be overloaded?
i) Size of operator (sizeof)            ii) Scope resolution Operator
iii) Conditional operator (?:)        iv) Assignment Operator (=)
A) i, ii, iii only
B) ii, iii, iv only
C) i, iii, iv only
D) all i, ii, iii, iv

15. …………. Is the process of creating new classes, called derived classes from existing classes called base class.
A) Inheritance
B) Encapsulation
C) Polymorphism
D) Overloading

16. State True or False.
i) While overloading operators new operator can be overloaded.
ii) The binary operator such as +, -, * and must explicitly return a value.
A) True, True
B) True, False
C) False, True
D) False, False

17. ………… function writes a string of text to a window.
A) cputs ()
B) put ()
C) gets ()
D) tputs ()

18. Which of the following condition (s) should satisfy the casting operator.
i) It must be a class member.
ii) It must not satisfy a return type.
iii) It must have any arguments.
iv) All of the above.

19. Find the Hierarchy of Data Types.
i) Long double   ii) Double             iii) Float                                iv) Long                                v) Int         vi) Char
A) 1-2-3-4-5-6
B) 1-3-2-4-5-6
C) 1-2-3-5-4-6
D) 1-2-4-3-5-6

20. ………….. function sets the fill pattern and color.
A) floodfill ()
B) setcolor()
C) setfillstyle()
D) fillstyle ()

 Answers:
1.       C) <<
2.       B) True, False
3.       C) Both i and ii
4.       A) Encapsulation
5.       D) All of the above.
6.       A) ->*
7.       C) Meta Class
8.       B) .*
9.       C) Default constructor
10.   D) Constructor
11.   D) All i, ii, iii, iv and v
12.   B) Copy Constructor
13.   A) True, True
14.   A) i, ii, iii only
15.   A) Inheritance
16.   C) False, True
17.   A) cputs ()
18.   iv) All of the above.
19.   A) 1-2-3-4-5-6
20.   C) setfillstyle()


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