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C++ Program to implement Dynamic Class with Constructor & Destructor – Q15

January 15, 2010 Leave a comment

Q15. Program to implement Dynamic Class with Constructor & Destructor:

Get the sum of elements of an array with user defined size, used dynamically within class using new & delete inside class constructor & destructor respectively.

… from College notes (BCA/MCA assignments):

#include <iostream.h>
#include <conio.h>
#include <string.h>

class CArray{
	private:
		int *arr;
		int len, sum;
	public:
		CArray(){
			sum = 0;
			}
		CArray(int s){
			len = s;
			arr = new(int[len]);
			}
		~CArray(){
			delete(arr);
			}
		void getArray();
		void Sum();
		void Display();
	};

void CArray :: getArray(){
	cout<<"\n Enter "<<len<<" elements in an Array: ";
	for(int i=0;i <len; i++)
		cin>>arr[i];
	}

void CArray :: Sum(){
	for(int i=0; i<len; i++)
		sum += arr[i];
	}

void CArray :: Display(){
	cout<<"\n Total Sum: "<<sum;
	}

void main(){
	int sz;
	clrscr();

	cout<<"\n Enter the Size of Array: ";
	cin>>sz;
	CArray Oarr(sz);

	Oarr.getArray();
	Oarr.Sum();
	Oarr.Display();

	getch();
	}

 

Output:

Enter the Size of Array: 5

Enter 5 elements in an Array: 33 21 45 76 39

Total Sum: 214


C++ Program to implement Pointer to function – Q14

January 14, 2010 Leave a comment

Q14. Program to implement Pointer to function:

Get the sum of two numbers using the concept of pointer to function.

… from College notes (BCA/MCA assignments):

#include <iostream.h>
#include <conio.h>

int sumNum(int a, int b){
	return (a+b);
	}

int (*ptr_f)(int, int);	// pointer to function.

void main(){
	int num1, num2;
	clrscr();

	cout<<"\n Enter 1st Number: ";
	cin>>num1;
	cout<<"\n Enter 2nd Number: ";
	cin>>num2;

	ptr_f = &sumNum;	// ptr_f points to display.

	cout<<"\n Sum of two Numbers: "<<ptr_f(num1, num2);

	getch();
}

 

Output:

Enter 1st Number: 34

Enter 2nd Number: 45

Sum of two Numbers: 79


Categories: Cpp Tags: ,

C++ Program to implement Constructor Overloading – Q13

January 13, 2010 Leave a comment

Q13. Program to implement Constructor Overloading:

Implement the concept of Constructor Overloading with the help of not less than three different constructors within any class of your choice.

… from College notes (BCA/MCA assignments):

#include <iostream.h>
#include <conio.h>
#include <string.h>

class Cperson{
	private:
		char name[20];
	public:
		Cperson(){
			cout<<"\n Constructor Called."<<endl;
			strcpy(name, "Manoj");
			}
		Cperson(char *str){
			strcpy(name, str);
			}
		Cperson(Cperson &per){
			strcpy(name, per.name);
			}
		void Show_Name(){
			cout<<name;
			}
	};

void main(){
	clrscr();

	Cperson Op1;
	Cperson Op2("Pandey");
	Cperson Op3(Op2);

	cout<<"\n Op1: ";
	Op1.Show_Name();

	cout<<"\n Op2: ";
	Op2.Show_Name();

	cout<<"\n Op3: ";
	Op3.Show_Name();

	getch();
	}

 

Output:

Constructor Called.

Op1: Manoj
Op2: Pandey
Op3: Pandey


Build ASP.net pages without coding with ASP.net Maker

January 13, 2010 Leave a comment

Recently I came across this cool tool which I’m using to create a web application for my company. Thanks to my boss/manager for introducing this tool and getting the full version.
With no or very less experience in MS.net I’ve completed the first iteration out of 5 (and many more to come) in the project. I just had previous knowledge of basic HTML, Javascript & C#/Java/C++ OOP fundamentals. My profile is of a Database Programmer and Technical Consultant with expertise in CRM technology in Finance & Print/Publishing domain.

The members in our team are more inclined towards backend technology with no or limited exposure to the web tech. So initially we thought to staff some extra resources from other teams who could help us creating front end and middle tier for us. With the introduction of this tool our problem was solved as we could create the pages with our own ideas and with much more flexibility and agility.

ASPM (short for ASP.net Maker) allows us to connect to any database and create pages dynamically as per our DB. It also facilitates us to create add/edit/delete/search pages with lot of more features. You just have to select any language either C# or VB.net, it creates the same code for you.

The more you use the tool the more you get to know about the features.

Some of the key features of this tool are:

– Advanced Security with MD5 and case-sensitive password
– User registration system with CAPTCHA option
– Export to CSV/HTML/Excel/Word/XML
– File uploading to database or folder
– Master/Detail
– Custom View
– Report
– Customizable template
– Database re-synchronization
– AJAX functionality
– Email Notification on Add/Edit/Delete

… and many more.

The only prerequisite to use this tool is knowledge of any database programming language so that one can design the database schema, tables, views, triggers, etc. I’m using MS SQL Server 2005 & using C# as a language option to create pages.

With the help of this tool not only I’m creating a application to facilitate users but also I’m learning ASP.net & C# and how to create web apps in MS.net technology.

May be its a beginning for the paradigm shift.

More info on: http://www.hkvstore.com/aspnetmaker

Categories: MS.net, Reviews Tags: ,

C++ Program to implement Toll Tax Problem by using CLASS Access Specifiers and SWITCH CASE – Q12

January 12, 2010 Leave a comment

Q12. Program to implement Toll Tax Problem by using CLASS Access Specifiers and SWITCH CASE:

Calculate the toll tax for cars passing by a toll bridge @ Rs 5 per car (use the concept static data members). Calculate and Print the following details:
– Total no of cars passed with paying the tax
– Total amount of tax paid
– Total no of cars passed without paying tax.

… from College notes (BCA/MCA assignments):

#include <iostream.h>
#include <conio.h>
#include <stdlib.h>

class TollBridge{
	private:
		static int car_yes, car_no;
		static int amt;
	public:
		static void GetCar();
		static void PutCar();
	};

int TollBridge::car_yes = 0;
int TollBridge::car_no = 0;
int TollBridge::amt = 0;

void TollBridge :: GetCar(){
	char ch;
	cout<<"\n Total Cars Passed: "<<car_yes+car_no;
	cout<<"\n This Car:- ";
	cout<<"\n Paid Tax (y/n) ?: ";
	cin>>ch;
	if(ch == 'y'){
		car_yes++;
		amt += 5;
		}
	else
		car_no++;
	}

void TollBridge :: PutCar(){
	cout<<"\n Total Car Passed: "<<car_yes+car_no<<endl;
	cout<<"\n\t Car Passed by giving Tax: "<<car_yes;
	cout<<"\n\t\t Amount Recieved: "<<amt<<endl;
	cout<<"\n Car Passed by not giving Tax: "<<car_no;
	}

void main(){
	int ch;
	char choice;
	while(1){
		clrscr();
		cout<<"\n TOLL TAX PLAZA";
		cout<<"\n ~~~~~~~~~~~~~~";
		cout<<"\n 1 -> Entry of CARS.";
		cout<<"\n 2 -> Report of CARS.";
		cout<<"\n 3 -> Exit.";
		cout<<"\n Enter your choice: ";
		cin>>ch;
		switch(ch){
			case 1:
				while(1){
					TollBridge::GetCar();
					cout<<"\n Do you want to continue 
  (y/n) ?: ";
					cin>>choice;
					if(choice =='n') break;
					}
				break;
			case 2:
				TollBridge::PutCar();
				getch();
				break;
			default:
				exit(1);
			} // end of switch.
		} // end of while.
	} // end of main.

 

Output:

TOLL TAX PLAZA
1 -> Entry of CARS.
2 -> Report of CARS.
3 -> Exit.
Enter your choice: 1

Total Cars Passed: 0
This Car:-
Paid Tax (y/n) ?: y

Do you want to continue (y/n) ?: y

Total Cars Passed: 1
This Car:-
Paid Tax (y/n) ?: y

Do you want to continue (y/n) ?: y

Total Cars Passed: 2
This Car:-
Paid Tax (y/n) ?: y

Do you want to continue (y/n) ?: y

Total Cars Passed: 3
This Car:-
Paid Tax (y/n) ?: n

Do you want to continue (y/n) ?: y

Total Cars Passed: 4
This Car:-
Paid Tax (y/n) ?: n

Do you want to continue (y/n) ?: y

Do you want to continue (y/n) ?: n

TOLL TAX PLAZA
1 -> Entry of CARS.
2 -> Report of CARS.
3 -> Exit.
Enter your choice: 2

Total Car Passed: 5
Car Passed by giving Tax: 3
Amount Recieved: 15
Car Passed by not giving Tax: 2