CS201 Assignment No. 02 Solution & Discussion Due Date: 27-01-2014

[Full Name]

	Assignment No. 02                         Semester: Fall 2013              CS201: Introduction to Programming		Total Marks: 20   Due Date: 27/01/2014
Instructions: Please read the following instructions carefully before submitting assignment. It should be clear that your assignment will not get any credit if: The assignment is submitted after due date. The submitted assignment does not open or file is corrupt. Assignment is copied(partial or full) from any source (websites, forums, students, etc) Note: You have to upload only .cpp file. Assignment in any other format (extension) will not be accepted and will be awarded with zero marks. For example, if you submit code in .doc (Word document) or .txt files or .exe file, no reward will be given in any case. Objective: The objective of this assignment is to provide hands on experience of:  Basic concepts of C/C++ classes and objects Dealing with Data members and member functions Initialization of objects Constructor Destructor Dynamic memory Allocation using new operator. Guidelines: Code should be properly indented and well commented. Follow C/C++ rules while writing variable names, function names etc Use only dev-C++ for this assignment.
Assignment
Problem Statement:  Write a program using class(constructor, destructor, other member functions) to find the frequency of letters (small and capital alphabet or digit) from your student id character string. For example, frequency of letter ‘4’ in the string of a student id: “MC124514517” is 2.   Detailed Description: You are required to write a program which contains a class myClass having the following data members:            char*str,  alphabet; and the following member functions: myClass(); void setId(char *); char * getId(); void countfunction(); ~myClass(); The main() function should create an object of myClass and through this object member functions are called one by one. When the object is created then constructor of myClass should dynamically allocate the memory using new operator for your VUID and displays a message after storing the default id in data member character pointer str.      “Default Constructor is called and default id is MC123456789” Similarly, setId() member function when called with your VUID passed as parameter, should set the value of data member character pointer str with your VUID. getId() function should return the value of data member character pointer str to the main(), then following message with your VUID should be displayed:       “Your ID is MC120403765” Finally countfunction() must get input (any alphabet) from user by displaying the message,      “Enter letter you want to count:” Then this function counts frequency of the specified letter from your VUID and displays it. Destructor at the end of the program should be called and display message: “Destructor called… and object has destroyed” Sample output of program:

 

[مَلیکا ایمان]

see this

complete solution CS201..

//www.vustudent.ning
#include<iostream>
#include<conio.h>
using namespace std;

class myClass
{
private :
char*str, alphabet;
public:
myClass()
{
str = new char[10];
cout"************ CS201_Assignment 02 By VUHelp.pk************ \n";
cout"\n Default Constructor is called ..... and default id is MC123456789 \n";
}
void setId(char *id)
{
str = new char[10];
strcpy(str,id);
}
char * getId()
{
return str;
}
void countfunction()
{
cout"\nEnter letter you want to count: ";
cin>>alphabet;
int i =0, count = 0;
while(str[i] != '\0')
{
if(alphabet == str[i])
{
count++;
}
i++;
}
cout"The total letters "alphabet" in your student id : "countendl;
}
~myClass()
{
delete[]str;
cout"\nDestructor called ...... and object has destroyed \n";
cout"Press any key to continue ..... ";
getch();
}
};
main()
{
myClass obj;
obj.setId("MC123456789");
cout"Your id is " obj.getId();
obj.countfunction();
//www.vustudent.ning

OutPut:
}

[+ M.Tariq Malik]

CS201 Complete and Final solution without any error
#include<iostream>
#include<conio.h>
using namespace std;

class myClass
{
private :
char*str, alphabet;
public:
myClass()
{
str = new char[10];
cout"\n Default Constructor is called ..... and default id is MC----- \n";
}
void setId(char *id)
{
str = new char[10];
strcpy(str,id);
}
char * getId()
{
return str;
}
void countfunction()
{
cout"\nEnter letter you want to count: ";
cin>>alphabet;
int i =0, count = 0;
while(str[i] != '\0')
{
if(alphabet == str[i])
{
count++;
}
i++;
}
cout"The total letters "alphabet" in your student id : "countendl;
}
~myClass()
{
delete[]str;
cout"\nDestructor called ...... and object has destroyed \n";
cout"Press any key to continue ..... ";
getch();
}
};
main()
{
myClass obj;
obj.setId("MC--------"); 
cout"Your id is " obj.getId();
obj.countfunction();
}