CS 101B C++ Lab Manual

8/12/2019 CS 101B C++ Lab Manual

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Yarmouk University

Computer Science Department

C++ Programming

Lab manual

Prepared by:

Dr. Iyad Abu Douh, Ahmed Bani-Hani, Fatima Abu-Hawas,

Siba Shaher, Asma Alhami, Enas Abdelrazak,

Reham Abdelqader, Maisaa Khazaleh, Nahed Mansour,

Wafaa Qarqaz, Amal Abu Naser, Ikdam Alhami


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Table of Contents

L 1: V D C....... 3

L 2: / .... 11

L 3 C .............................................................. 18

L 4 S

...................................................................................... 30

L 5 M ( )....... 36

Lab 6 C S: , L................... 46

Lab 7 F.................................................................... 50

Lab 8 , , A............ 55

Lab 9 F ....................................... 60

L 10 A................................................................................ 65

L 11 ..................................................................... 70

Lab 12 .......................................................................... 73


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Lab assignment-1Learn the student how to open Microsoft visual c++ 6.0 : Click on the Start button.

Choose all programs.

Then choose Microsoft visual c++ 6.0 as shown in figure 1.


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F 1

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Figure 6

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Lab assignment-3What is/are the output for the following code:

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Lab assignment-1

Rewrite the following in C++ Code and print it.

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#

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( )

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(>=100 &&


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cin>>y;

intz;

cin>>z;

intmax=x;

if(max


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}

}

}

Lab Problem -3

(BMI) BMI :

C BMI

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P BMI 1

N I 1 2

O I 2 2

O I


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Lab 3

Class Postcard

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Classes: Class Rectangle

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The following is a class called Rectangle which contains two private data elements ,

Width and Height of type double and a number of member functions. Fill in theblanks to completethe class definition.

#include

------------------

-----------Rectangle

{

:--------------

double Width;

double Height;


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public:

//write a constructor that calls set_height and set_width functions to initialize

data members

//write a function set_height that sets the Height if it is positive, otherwise

Height will be zero.

//Function set_width that sets the Width if it is positive, otherwise Width willbe zero.

//write the header of a function area that returns the area of a rectangle

-----------------------------------------------------

{

return Width * Height;

}

void print()

{

//complete function print to print the data members

}

};

void main()

{

//create an object T1 from class Rectangle of width 4 and height 5

//call function area

//call function print

}


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Class Calculator

B:

:

A (+,,*,/)

L

:

Completethe class definition and

Answer the questions associated to this exercise********************************************************************

#

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//

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/*// */


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;

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=10.0;

= 2.5;

/* */

/* SC*/

/* & SC ;

""*/


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.();

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Class Triangle

B:

Triangles are classified by the number of equal sides they have to: scalene - all 3 sides have different lengths

isosceles - 2 sides have equal lengths

equilateral - all 3 sides are equal .

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Example: A triangle has side a = 4, side b = 5 and side c = 6. What is its area?The perimeter = 4 + 5 + 6 = 15.

The semi-perimeter is one half of this or 7.5

Using Heron's formula,

area = square root (s (s - 4) (s - 5) (s - 6))

area = square root (7.5 (7.5 - 4) (7.5 - 5) (7.5 - 6))

area = square root (7.5 (3.5) (2.5) (1.5))

area = square root (98.4375)

area = 9.921567416...

:

1. .

2. .3. W T A.

4. T .

5. C : 0.5, 1.5 3.

L:

1: C :

public:

T(double, double,double); //constructor

double Area(); // calculate the area of triangle

double perimeter (); // calculate the perimeter of triangle


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double get_Side1 ();//return the value of the first side of triangle

double get_Side2 ();//return the value of the second side of triangle

double get_Side3 ();//return the value of the third side of triangle

/*set values for the triangle sides values*/

void set_Sides(double, double,double);

string check_Type ();// decide the type of the triangle

void print ();// print all information about the triangle

private:

double Side1;

double Side2;

double Side3;

};

2:.

.


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Class Students

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34, 43, 81, 106, 106

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SETDATA SN,1,2, 3 .

GETDATA .

ESLT "ASS"

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SETDATA SN,1,2, 3

"",22,21, 40 .

GETDATA .

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ESLT S1.


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Class Bank Account

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ID N)

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4. F

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1. C A1 .2. C A2

: "A A", "190129876","1234567", 120.

3. B A2.

3: E

.


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Lab 4

.

Lab Objectives:

- Learn how to engineer a class to separate its interface from itsimplementation and encourage reuse.

- Learn how to validate data members in set functions, to ensure that data inan object adheres to a particular format or is in proper value range.

Background:

Separating class interface from its implementation:

Interface of the class:- Specifies what services the class permits users to use and how to requestthose services, but not specify how the services are implemented.

- Contains the prototype of the member functions and the declaration of thedata members.

- We place class interface in header file.Define member functions outside the class definition, in a separate source-code file:

- In source-code file for a classo Use binary scope resolution operator (::) to tie each member

function to the class definition

o Implementation details are hidden

o Client code does not need to know the implementationDriver files (source file)

o Program used to test software (such as classes).o Contains a main function so it can be executed.

#include preprocessor directive

- Used to include header files- Instructs C++ preprocessor to replace directive with a copy of the contents

of the specified file

- Quotes indicate user-defined header files- Angle brackets indicate C++ Standard Library

Validating Data withsetFunctions

setfunctions can validate data Known as validity checking Keeps object in a consistent state

The data member contains a valid value Can return values indicating that attempts were made to assign invalid

data.

string member functions length returns the number of characters in the string. substr returns specified substring within the string.

Pre- Lab:

The student must know how to:- Define a class and use it to create object.


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- Define member functions in a class to implement the class's behaviors.- Declare data members in a class to implement class's attributes.- Call a member function of an object to make that member function

performs its task.

- Use a constructor to ensure that an object's data is initialized when the

object is created.Learning Outcomes:You will:

- Be able to write a full documented and separated interface C++ programthat deals with classes.

- Be able to validate data members in set functions, to ensure that data in anobject adheres to a particular format or is in proper value range.

Assessment tools:

- Notes will be taken during the lab time.- Quizzes.

Lab Exercises:Exercise #1:

W ++

Point that contains the data members x and y of type integers and the following

member functions:

1- Parameterized constructor that initializes x and y to any given values.2- setX function to assign new value to x between 10 and 50.3- setY function to assign new value to y, the value must be greater than or equal

to 0.

4- getX to return the value of x.5- print to print any point as ordered pair.Write a main function declare object p1 with the values 12 and 30 to x and y

respectively, and test the member functions.

The solution:

To create a full documented and separated interface ++

Point:

1- Create new project of type Win32Console Application of any name.2- then add a header file name e.g. point.h to write the class interface as

follows://file name: point.hclass Point

{

private:

int x,y;

public:

Point(int, int);

void setX(int);

void setY(int);

int getX();

void print();

};


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3- then add a source file e.g. implementation.cpp to write the implementation foreach member function as follows:

//file name: implementation.cpp

#include

using namespace std;

#include "point.h"

Point::Point(int a, int b)

{

setX(a);

setY(b);

}

void Point::setX(int a)

{

x = (a>= 10 && a= 0)

y = b;

else y = 0;

}

int Point::getX()

{

return x;

}

void Point::print()

{

cout


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cout


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#include "student.h"

Student::Student()

{

setName("ali");ID = 2012066034;

setGrade(65.7);

}

void Student::setName(string n)

{

if(n.length()= 60 ? gr: 60;

}

void Student::print()

{

cout


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3) Mul to return the result of multiplying x by y4) Div to return the result of dividing x by y5) Mod to return the result of x % y6) Constructors to initialize object data members x and

Write the main function and define an object of type Calculator to test all the member

functions.

Assignment #2: Write a full documented and separated interface C++ program that

implements classBook that contains the following:1) One data member that contains book title.2) One data member that contains book author3) One data member that contains book publisher.4) One data member that contains book ISBN5) Member function to set all data member values6) Get functions to retrieve ISBN and author name value for a given book.7) Member function to print a summary of information for a given book.

Define a main function with objects of type Book to test the class operations.

Assignment # 3:

Write a full documented and separated interface C++ program that implements class

Account that a bank might use to represent customers' bank accounts.

- Your class should include one data member of type double to represent the account

balance.

- Your class should provide a constructor that receives an initial balance and uses it to

initialize the data member. The constructor should validate the initial balance to

ensure that it is greater than or equal to 0. If not, the balance should be set to 0 and the

constructor should display an error message, indicating that the initial balance was

invalid.The class should provide three member functions:

- Function credit should add an amount to the current balance.

- Member function debit should withdraw money from the account and should

ensure that the debit amount does not exceed the account's balance. If it does,

the balance should be left unchanged and the function should print a message

indicating "Debit amount exceeded account balance."

- Member function getBalance should return the current balance.

Create a program that creates two Account objects and test the member functions of

class Account.


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charletter;

cin>>letter;

if(letter >='A' && letter


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if(op== '+')

cout


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inta;

couta;

intb;

coutb;

charop;

coutop;

switch(op)

{

case'+':

cout


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}

L :

Lab Problem-1:

.

Lab Problem -2

T ,

(). , .

#include

using namespacestd;

voidmain()

{

intnum;

coutnum;

if(num%2!=0)

if(num>10)

if(num


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elseif(num


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Lab 6 ,

Lab Objectives:

After performing this lab, the students should be able to

explain the basics of while and for loops and while loops

apply the syntaxes of loop structures

design programs using loop structures

solve (hard) problems of repetitive nature using loop structures

Background:Loop structures called for loops and while loops are covered as some basic control

structures. The loop can be used to do repetitive calculations. Though human beings

can do calculation or processing or repetitive nature by hand, it is much slower and

tedious for the human being. Good and solid logic of loop structures can be used to

solve such problems in a very efficient way.

For example, in order to compute the sum of 1 + 2 + 3 + + 100, we can do easily

using the following code:

int sum = 0;

for (int j = 1; j


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cout 1 is a prime number, theoretically we need to verify that

for i = 2, 3, 4, 5, .., up to n-1, none of them divides n.

#include


void main()

{

int x;

cin>>x;

bool isPrime=true;

int i=2;

while(i


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#include


void main()

{

int x,y;//x is base , y is power

cin>>x>>y;int result=1;

for(int i=1;i


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Lab 7

Functions.

Lab Objectives:

After completing this lab, the students should be able to

Explain the concepts of functions.

use common math functions available in the C++ Standard Library.

Explain what a function prototype is and how that is different from thefunction definition.

Convert the code processing in the main function to a function calledfrom the main function.

Create functions with multiple parameters.

The mechanisms for passing information between functions andreturning results.

Background:The function is a good mechanism to encapsulate code used repeatedly in a

program so that it can be called from other parts of the code. A function does not use

a keyword called function but instead the programmer has to define function

prototype before the main function and then define the function again later.

A function has the following format:

type function_name (optionalparameter list){

function code;

return value;

}

Return data typeof function is in general the types of C++ variable types including

int, double, char etc.

The function does some processing and the calculated value is returned using the

return value.

In the main function or the other functions calling this function_name, the value

returned is used like the instruction:calling_value = function_name (parameters);

A function does not need to always return a value. A function not returning a value

can omit the return statement and the function type is void in this case.

Function prototype has the following format:

type function_name (list of variable types);

Examples are:

Example 1:

int compute_sum (int);


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Example 2:

void tryout ();

Function prototypes differ from the function definitions in two places: there is nocode (no {} with code in between) and the variable names do not follow the types.

A function prototype can return nothing, in which case void is the type returned; also

it may have no parameters at all like example 2 above.

The function prototype is declared before the main function with the function calls

inside the main function or the other functions calling this function.

The function definitions are put after the main function.

C++ Standard Library : is a collection of functions, which are written in the core

language and part of the C++ ISO Standard itself to provides several generic functions

that utilize and manipulate these containers, function objects, generic strings andstreams (including interactive and file I/O), support for some language features, and

everyday functions for tasks such as finding the square root of a number. Using sqrt

in header file.

Example 3:

Pre-labs:

In order to do this lab, you should know how to write, compile, and run a C++ program, and

you should understand what functions are and how to invoke them. You should also befamiliar with an editor

Assessment tools:

The assessment is according to the student participation in the lab if the student solves the

exercise, he will get the participation mark for this lab.


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Lab Assignments:

Lab assignment-1

Consider the following code that computes the sum of 1 + 2 + 3 + .. + 100 by a for

loop.

#include


int main ( ) {

int sum = 0;

for (int j = 1; j


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Lab assignment-2:

.

Lab assignment-3: .

.

Lab Problems:

Lab Problem-1

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Lab Problem-2

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Lab Problem-3

C++ 3

M . 345 8.


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Lab 8 , ,

Lab Objectives:

After performing this lab, the students should be able to:

Solve problems that needs to generate random numbers

Realize where an identifier can be referenced in a program and why

Use default arguments when needed in a function

Background:

Rand() is a function generates an unsigned integer between 0 and

RAND_MAX (a symbolic constant defined in header file )

If we want a random number in the range [a, b] we can use the formula

a + rand() % (b a + 1)

Cube_volume = side_length * side_length * side_length

If the cylinder has a radius r and length (height)h, then its volume isgiven by

V = r2h , = 3.14

Pre-lab:

The student must know how to

Write functions and call them

Trace and try to find output

Include the necessary header files if needed

Assessment tools:

Notes will be taken during the lab time

Quizzes

Lab Assignments:


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Lab assignment-1

100

51 10 .

.

#

#

;

()

( = 1;


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// F B

1 = 5;

2 = 8;

3 = 4;

// B

1 = 6;

2 = 9;

// B

1 = 7;


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C++ 1

.

# ;

C( L =1.0);

()


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4. 1 ,

5.

:: = :: + 2* ;


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Lab 9

Lab Objectives:

After performing this lab, the students should be able to:

Understand the idea of Overloading Functions and be able to write an

overloaded function.

The student should be prepared to understand the idea of operator

overloading in general

Understand the idea of recursion and compare it to the iterative paradigm

Trace a recursive function

The student should know how to write a recursive function

Should be able to convert any program written using loops into a recursive

one

Background:

Function signature is both the name and parameter list of that function To overload a function is to write at least two functions at the same

scope(workspace)with different signatures[i.e. the same name but with

different parameter list (make the parameters in every list differ in types

,number, or appearance) ]

A recursive function is a function that calls itself.

Pre-lab:

The student must know how to

Write functions and call them

Trace and try to find output

Assessment tools:


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Examples will be taken during the lab time

Quizzes

Lab Assignments:

Lab assignment-1

W

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#

;

( )

**3.14;

( )

*;

( , )

*;

()


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(1)*

()


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Lab Problems:

Lab Problem-1

in Lab assignment-4

( ).

Lab Problem -2

++

13

.

Lab Problem -3

C

.

Lab Problem -4

C .

* ( , )


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void PrintArray(int Array[], int ArraySize){

for (int i = 0; i


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Lab Assignments:

Lab assignment-1:Fill in the blanks

Complete the following program below by filling in the blanks. (Read

comments for assistance. )

// bubble.cpp#include using namespace std;

void bubbleSort(int array[], int size); // bubble sortvoid swap(int &x, int &y); // helper function of bubbleSortvoid printArray(int array[], int size); // print array

int main(){

const int MAX = 10;

/* Declare an array called value of size MAX with

elements: 20, 15, 18, 19, 22, 11, 9, 7, 10, 3*/

cout


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Lab assignment-2: Storing quizscores

Write a program that allows a user to enter 6 quiz scores to calculate and print

the average for these quizzes.

#include


int main() {int scores[6];int total = 0;

cout


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Lab Problem -2: search array for a key value

Write a function that searches an array for a "key value" and returns the array's

index for that element. If the element is not found, then the function should

return -1. Write a driver program that correctly tests this function. The drivershould print the array and show the value of the search result.

Lab Problem -3: Minimum array entry

With a function that take as parameters a 2D array and the capacity of the

array.your function has to find the minimum entry in a 2D array .write a driver

program that reads array values and finds the minimum entry using your

function.


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Lab Objectives:

In this lab students will learn:

1. Memory concept of variables, pointers and how to use variable identifiers andpointers to refer to the variable.

2. Pointer variable declarations and initialization.3. Direct and indirect referencing a variable using the pointer operators.4. Using * and address (&) operators.

Background:

When declaring a variable, it is located at a specific location in memory,the memory

address. The task of locating variables is automatically performed by the operatingsystem during runtime. In some cases we need to know the address where the variable

is being stored during runtime.

Variable which stores a reference to another variable is called a pointer. We can

directly access the value stored in the variable using a pointer which points to it.

Syntax:

1. Pointer Declaration:

Syntax: Pointer_type *Pointer_name;

Example: int *Ptr1; double *Ptr2;

2. Pointer initialization:

Syntax: Pointer_name=NULL;

Pointer_name=&variable_name;

Example: int *Ptr1, var;

Ptr1=&var;

Assessment tools:

A

M L


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1. Evaluation for lab exercises.

2. Quizzes.

Lab Assignments:

Lab assignment-1:

Write a c++ program that defines an integer variable var1and a pointer Ptrthat

points to var1. Assign and print value to var1, then assign and print a new value to

var1 using Ptr.

Solution:

#include


void main()

{

int var1,*ptr;

ptr=&var1;

var1=10;

cout


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Solution:

Lab Problems:

Lab Problem-1: Correct the errors in the following program.

Lab Problem -2: Write a c++ program that use pointers to swap two

integer values.

#include


void main()

{ int n,*ptr=&n;

cin>>n>>ptr;

*ptr=n-2;

if (*ptr>=0) *n++;

else

cout


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Lab 12 .

L O:

T F I/ fstream ++ F /W

T ,

.

T .

T

T

T

B:

:

S / ++ ++.

A :

T

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L A:

Lab assignment-1Create an empty text file using c++ program and set its location

#include

int main()

{fstream file_op("c:\\test_file.txt",ios::in);

file_op.close();

return 0;

}

L 2Assign value to an empty text file using c++ program

#includeint main()


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{

ofstream file_op("c:\\test_file.txt",ios::in);

int x=5;

file_op ;

Documents

CS 101B C++ Lab Manual