Punjabi University Patiala BCA 3rd Semester. Punjabi Question Paper by 124 Study App

PUNJABI QUESTION PAPER 2017-18

Punjabi University Patiala BCA 3rd Semester. c++ Question Paper by 124 Study App 

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Punjabi University Patiala BCA 3rd Semester. c++ Question Paper by 124 Study App

Punjabi University Patiala BCA 3rd Semester. c++ Question Paper by 124 Study App

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Punjabi University Patiala BCA 3rd Semester. DBMS Question Paper by 124 Study App

Punjabi University Patiala BCA 3rd Semester. DBMS Question Paper by 124 Study App 

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ALL BCA 3rd Semester Monthly Test Question paper of Punjabi University Patiala

C++  BCA 3rd Semester Monthly  Test Question paper of Punjabi University Patiala ,Baba Jogi peer Neighborhood campus ,RALLA 

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DBMS, BCA 3rd Semester Monthly  Test Question paper of Punjabi University Patiala ,Baba Jogi peer Neighborhood campus ,RALLA 

DESC.MATHEMATICS   BCA 3rd Semester Monthly  Test Question paper of Punjabi University Patiala ,Baba Jogi peer Neighborhood campus ,RALLA 

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Question Paper 2017 of BCA 2nd Year of Punjab University Question paper

Punjabi University Question Paper
Course: BCA
OBJECT ORIENTED PROGRAMMING (USING C++)
Time allowed: 3 Hours
Max. Marks: 90

Study Materials Description : 2017 Punjabi University B.C.A Computer Application Object Oriented Programming (Using C++) Question Paper 2017 of BCA 2nd Year of Punjab University Question paper

ATTEMPT FIVE QUESTIONS IN ALL, SELECTING TWO QUESTIONS EACH FROM SECTION - A AND SECTION – B SECTION C IS COMPULSORY.

SECTION - A

1. Differentiate between

(a) Procedural Analysis and Object oriented analysis.

(b) Data encapsulation and Data Inheritance. (9,9)

2.(a) What are pre-processor directives? Explain their use with the help of an example.

(b) Explain the structure of an object oriented C++ program.

(c) Explain the use of function main(). (7,7,4)

3. (a) Define a class "ACCOUNT". Include following members:

Data Members: Name of Depositor, Account No., Type of Account, Balance Amount.

Member Function: To assign initial values, deposit amount, with draw after checking balance, To display name and balance. Write main Program to test the program for 10 customers.

(b) What are array of objects ? Explain with example with detail. (12,6)

4.(a) Differentiate between Pass By Value and Pass By Reference.

(b) What are different types of function declarations? How will you declare a function outside the class?

(c) Explain copy constructor with the help of an example. (6, 6, 6)


SECTION – B

5. (a) What is function overloading? Write a program in c++ which has a Function add that is able to concatenate two strings, if values passed Are strings and can perform addition, if values are numbers.

(b) Explain inline functions and also create one. (12, 6)

6. (a) What are abstract classes? Explain their use.

(b) How can protected members of a class become inheritable?

(c) Explain the concept of nested classes. (6, 6, 6)

7. Differentiate between

(a) Private & Public Inheritance

(b) Stacks and Queues

(c) Multiple and multilevel inheritance

8. (a)What is linked list? What are its advantages and disadvantages ?

(b) Write a program to create a linked list and perform-

(i) Insertion – at the beginning, at the end and in between

(ii) Deletion – at given position

(iii)Display elements.

SECTION – C

9. (a) What is data hiding?

(b) Explain input and output streams.

(c) Explain scope resolution operator.

(d) What are destructors? Give example.

(e) What is operator overloading?

(f) Differentiate between single and multiple inheritances.

(g) What are base and derived classes?

(h) What are various methods to traverse a tree?

(i) Explain the concept of a class. (9*2=18)

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what are Constant Arguments in Cpp by 124Study.blogspot.in

in statement (a), the const modifier enables to assign an initial value to a variable that cannot be changed later by the program. For example, const age = 40; ... When the const variable is used with a pointer argument in a function's parameter list, the function cannot modify the variable that the pointer points to

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Advantages and Disadvantages Of Object Oriented Programming C++ By 124 Study App

Advantages Of Object Oriented Programming

• OOP provides a clear modular structure for programs.
• It is good for defining abstract data types.
• Implementation details are hidden from other modules and other modules has a clearly defined interface.
• It is easy to maintain and modify existing code as new objects can be created with small differences to existing ones.
• objects, methods, instance, message passing, inheritance are some important properties provided by these particular languages
• encapsulation, polymorphism, abstraction are also counts in these fundamentals of programming language.
• It implements real life scenario.
• In OOP, programmer not only defines data types but also deals with operations applied for data structures.

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Object Oriented Programming has several disadvantages which made it unpopular in the early years.

• Size: Object Oriented programs are much larger than other programs. In the early days of computing, space on hard drives, floppy drives and in memory was at a premium. Today we do not have these restrictions.
• Effort: Object Oriented programs require a lot of work to create. Specifically, a great deal of planning goes into an object oriented program well before a single piece of code is ever written. Initially, this early effort was felt by many to be a waste of time. In addition, because the programs were larger (see above) coders spent more time actually writing the program.
• Speed: Object Oriented programs are slower than other programs, partially because of their size. Other aspects of Object Oriented Programs also demand more system resources, thus slowing the program down.

by 124 STUDY APP 

CEO- RANJOT SINGH 

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BCA 3rd Sem C++ Question Paper 2017 from Punjabi University Patiala

BCA 3rd Sem C++ Question Paper 2017 from Punjabi University Patiala 

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What are variables? List C++ rules for variables naming.

Naming Rules for Variables

The names of variables in the C++ language are referred to as identifiers.   The best naming convention is to choose a variable name that will tell the reader of the program what the variable represents. Variables that describe the data stored at that particular memory location are called mnemonic variables. Rules for naming variables:  Variable names in Visual C++ can range from 1 to 255 characters. To make variable names portable to other environments stay within a 1 to 31 character range.  All variable names must begin with a letter of the alphabet or an underscore( _ ).  For beginning programmers, it may be easier to begin all variable names with a letter of the alphabet.  After the first initial letter, variable names can also contain letters and numbers.  No spaces or special characters, however, are allowed.  Uppercase characters are distinct from lowercase characters.  Using all uppercase letters is used primarily to identify constant variables.   You cannot use a C++ keyword (reserved word) as a variable name. Tip:  Some programmers use an underscore in variable names to separate parts of the name, such as shipping_weight. Others prefer a "capital style" notation, such asshippingWeight to separate parts of the name.  NEVER use uppercase for every letter in a variable name, because uppercase names are reserved for constant variables. Samples of acceptable variable names:  Samples of unacceptable variable names: Grade  Grade(Test) GradeOnTest GradeTest#1 Grade_On_Test 3rd_Test_Grade

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Difference Between Static and Dynamic Binding in c++ by 124study.blogspot.in

Association of a ‘function definition’ to a ‘function call’ or an association of a ‘value’ to a ‘variable’, is called ‘binding’. During compilation, every ‘function definition’ is given a memory address; as soon as function calling is done, control of program execution moves to that memory address and get the function code stored at that location executed, this is binding of ‘function call’  to ‘function definition’. Binding can be classified as ‘static binding’ and ‘dynamic binding’. If it’s already known before runtime, which function will be invoked or what value is allotted to a variable, then it is a ‘static binding’, and if it comes to know at the run time then it is called ‘dynamic binding’.

Content: Static Vs Dynamic Binding

1. Comparison Chart
2. Definition
3. Key Differences
4. Conclusion

Comparison chart:

BASIS FOR COMPARISON	STATIC BINDING	DYNAMIC BINDING
Event Occurrence	Events occur at compile time are "Static Binding".	Events occur at run time are "Dynamic Binding".
Information	All information needed to call a function is known at compile time.	All information need to call a function come to know at run time.
Advantage	Efficiency.	Flexibility.
Time	Fast execution.	Slow execution.
Alternate name	Early Binding.	Late Binding.
Example	overloaded function call, overloaded operators.	Virtual function in C++, overridden methods in java.

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What is inheritance? What are the base and derived classes? Give a suitable example of inheritance. by 124study.blogspot.in

C++ Multiple, Multilevel and Hierarchical Inheritance. ... Inheritance is one of the core feature of an object-oriented programming language. It allows software developers to derive a new class from the existing class. The derived class inheritsthe features of the base class (existing class).


What are the base and derived classes?

A base class is a class, in an object-oriented programming language, from which other classes are derived. It facilitates the creation of other classes that can reuse the code implicitly inherited from the base class (except constructors and destructors). A programmer can extend base class functionality by adding or overriding members relevant to the derived class. 

derived Classes ???

Any class type (whether declared with class-key class or struct) may be declared as derived from one or more base classes which, in turn, may be derived from their own base classes, forming an inheritance hierarchy.

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What are the elements of object oriented Programming? 124study.blogspot.in

List down elements of an object oriented language.

Class :
A class is a user defined data type. It serves as a template of the objects. You can define structure and behavior of an object using class. It includes data and the member functions that operate on data.

Inheritance :
Inheritance enables a new class to reuse the state and behavior of old class. The new class inherits properties and methods from the old class and is called as derived class and the old class is called as base class. The methods thus inherited can be extended using overriding facility of C++.

Encapsulation :
The wrapping up of data and member function into an object is called encapsulation. The data is not accessible to the outside world and only those functions which are wrapped into the object can access it. An encapsulated objects act as a "black box" for other parts of the program which interact with it. They provide a service, but the calling objects do not need to know the details how the service is accomplished.

Polymorphism :
Polymorphism enables one common interface for many implementations, and for objects to act differently under different circumstances. You can also achieve polymorphism in C++ by function overloading, operator overloading and implementation inheritance.

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what is Pointer ? Definition by 124Study.blogspot.in

Pointer

Computer programming

In computer science, a pointer is a programming language object that stores the memory address of another value located in computer memory. A pointer references a location in memory, and obtaining the value stored at that location is known as dereferencing the pointer. As an analogy, a page number in a book's index could be considered a pointer to the corresponding page; dereferencing such a pointer would be done by flipping to the page with the given page number and reading the text found on that page. The actual format and content of a pointer variable is dependent on the underlying computer architecture.

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Operators in C++ by 124study.blogspot.in

Operators in C++ by 124study.blogspot.in

Operators are special type of functions, that takes one or more arguments and produces a new value. For example : addition (+), substraction (-), multiplication (*) etc, are all operators. Operators are used to perform various operations on variables and constants.

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Types of operators

1. Assignment Operator
2. Mathematical Operators
3. Relational Operators
4. Logical Operators
5. Bitwise Operators
6. Shift Operators
7. Unary Operators
8. Ternary Operator
9. Comma Operator

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Assignment Operator ( = )

Operates '=' is used for assignment, it takes the right-hand side (called rvalue) and copy it into the left-hand side (called lvalue). Assignment operator is the only operator which can be overloaded but cannot be inherited.

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Mathematical Operators

There are operators used to perform basic mathematical operations. Addition (+) , subtraction (-) , diversion (/) multiplication (*) and modulus (%) are the basic mathematical operators. Modulus operator cannot be used with floating-point numbers.

C++ and C also use a shorthand notation to perform an operation and assignment at same type. Example,

int x=10;
x += 4 // will add 4 to 10, and hence assign 14 to X. 
x -= 5 // will subtract 5 from 10 and assign 5 to x.

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Relational Operators

These operators establish a relationship between operands. The relational operators are : less than (<) , grater thatn (>) , less than or equal to (<=), greater than equal to (>=), equivalent (==) and not equivalent (!=).

You must notice that assignment operator is (=) and there is a relational operator, for equivalent (==). These two are different from each other, the assignment operator assigns the value to any variable, whereas equivalent operator is used to compare values, like in if-else conditions, Example

int x = 10;  //assignment operator
x=5;         // again assignment operator 
if(x == 5)   // here we have used equivalent relational operator, for comparison
{
 cout <<"Successfully compared";
}    

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Logical Operators

The logical operators are AND (&&) and OR (||). They are used to combine two different expressions together.

If two statement are connected using AND operator, the validity of both statements will be considered, but if they are connected using OR operator, then either one of them must be valid. These operators are mostly used in loops (especially while loop) and in Decision making.

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Bitwise Operators

There are used to change individual bits into a number. They work with only integral data types like char, int and long and not with floating point values.

• Bitwise AND operators &
• Bitwise OR operator |
• And bitwise XOR operator ^
• And, bitwise NOT operator ~

They can be used as shorthand notation too, & = , |= , ^= , ~= etc.

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Shift Operators

Shift Operators are used to shift Bits of any variable. It is of three types,

1. Left Shift Operator <<
2. Right Shift Operator >>
3. Unsigned Right Shift Operator >>>

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Unary Operators

These are the operators which work on only one operand. There are many unary operators, but increment ++ and decrement -- operators are most used.

Other Unary Operators : address of &, dereference *, new and delete, bitwise not ~, logical not !, unary minus - and unary plus +.

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Ternary Operator

The ternary if-else ? : is an operator which has three operands.

int a = 10;
a > 5 ? cout << "true" : cout << "false"

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Comma Operator

This is used to separate variable names and to separate expressions. In case of expressions, the value of last expression is produced and used.

Example :

int a,b,c; // variables declaration using comma operatora=b++, c++; // a = c++ will be done.

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