(Online Address Book Revisited) Programming Exercise 9 in Chapter 3 could handle

Question

(Online Address Book Revisited) Programming Exercise 9 in Chapter 3 could handle a maximum of only 500 entries. Using linked list, redo the program to handle as many entries as required. Add the following operations to your program:

a. Add or delete a new entry to the address book.

b. When the program terminates, write the data in the address book to a disk.
# include <iostream>
# include <conio>
# include <stdio>

class addressbook
{
private :
char name[500];
long ph_num; //class addressType :public addressbook
char address[500];
int year;
int mounth;
int day;
char gender;
int d,Th,y;
char M,F,m,f;
// char freind[];

public:
addressbook();
void setName();
void getName();
void getphone();
long setphone();
void setAddress();
void getAddress();
float getAverage();
int setDay();
void getDay();
int setMounth();
void getMounth();
int setYear();
void getYear();
char setGender();
void getGender();



};

addressbook::addressbook() // constructor
{
name;
ph_num=0;
year=0;
mounth=0;
day=0;

}

int addressbook::setDay()
{
cout<<" Enter the day: ";
cin>>d;
day=(d>=1 && d<32)? d : 0 ;
return day;
}

int addressbook::setMounth()
{
cout<<" Enter the mounth: ";
cin>>m;
mounth=(Th>=1 && Th<13)? Th : 0 ;
return mounth;
}

int addressbook::setYear()
{
cout<<" Enter the year : ";
cin>>y;
year=(y>=1 && y<2008)? y : 0;
return year;
}

void addressbook::getMounth()
{
cout<<mounth<<"/";
}

void addressbook::getDay()
{
cout<<" BIRTH DAY : "<<day<<"/";
}

void addressbook::getYear()
{
cout<<year;
}
char addressbook::setGender()
{
int flag=0;
cout<<" Enter the gender,(F)for female (M)for male: ";
cin>>gender;
while(flag!=1)
{
if(gender==('F')||gender==('M')||gender==('m')||gender==('f'))
flag=1;
else
{
cout<<" error.....Try Again ";
cin>>gender;
}
}
}

void addressbook::getGender()
{

cout<<" Gender : "<<gender<<endl;
}


void addressbook::getAddress()
{
cout<<" Address : "<<address<<endl;
}

void addressbook::setAddress()
{
cout<<" Enter the address: ";
gets(address);
}

void addressbook::setName()
{
cout<<" Enter the name: ";
gets(name);
}

void addressbook::getName()
{
cout<<" Name : "<<name<<" "<<endl;
}

long addressbook::setphone()
{
cout<<" Enter the person number: ";
cin>>ph_num;
return ph_num;
}

void addressbook::getphone()
{
cout<<" Person # : "<<ph_num<<endl;
}

/*class addressType :public addressbook
{
do that

};*/

main()
{

int s;
cout<<" Enter number person max(500): ";
cin>>s;
addressbook book[10];
for(int i=1;i<2;i++)
{
book[i].setName();
book[i].setphone();
book[i].setAddress();
book[i].setDay();
book[i].setMounth();
book[i].setYear();
book[i].setGender();

cout<<" * ";

}

for(int u=0;u<2;u++)
{
book[u].getName();
book[u].getphone();
book[u].getAddress();
book[u].getGender();
book[u].getDay();
book[u].getMounth();
book[u].getYear();
}

getch();
}

Explanation / Answer

# include <iostream>
# include <conio>
# include <stdio>
#include<fstream>

class addressbook
{
private :
   char name[500];
   long ph_num; //class addressType :public addressbook
   char address[500];
   int year;
   int mounth;
   int day;
   char gender;
   int d,Th,y;
   char M,F,m,f;
   // char freind[];

public:
   addressbook();
   void setName();
   void getName();
   void getphone();
   long setphone();
   void setAddress();
   void getAddress();
   float getAverage();
   int setDay();
   void getDay();
   int setMounth();
   void getMounth();
   int setYear();
   void getYear();
   char setGender();
   void getGender();

};

addressbook::addressbook() // constructor
{
   name;
   ph_num=0;
   year=0;
   mounth=0;
   day=0;

}

int addressbook::setDay()
{
   cout<<" Enter the day: ";
   cin>>d;
   day=(d>=1 && d<32)? d : 0 ;
   return day;
}

int addressbook::setMounth()
{
   cout<<" Enter the mounth: ";
   cin>>m;
   mounth=(Th>=1 && Th<13)? Th : 0 ;
   return mounth;
}

int addressbook::setYear()
{
   cout<<" Enter the year : ";
   cin>>y;
   year=(y>=1 && y<2008)? y : 0;
   return year;
}

void addressbook::getMounth()
{
   cout<<mounth<<"/";
}

void addressbook::getDay()
{
   cout<<" BIRTH DAY : "<<day<<"/";
}

void addressbook::getYear()
{
   cout<<year;
}
char addressbook::setGender()
{
   int flag=0;
   cout<<" Enter the gender,(F)for female (M)for male: ";
   cin>>gender;
   while(flag!=1)
   {
       if(gender==('F')||gender==('M')||gender==('m')||gender==('f'))
           flag=1;
       else
       {
           cout<<" error.....Try Again ";
           cin>>gender;
       }
   }
}

void addressbook::getGender()
{

   cout<<" Gender : "<<gender<<endl;
}

void addressbook::getAddress()
{
   cout<<" Address : "<<address<<endl;
}

void addressbook::setAddress()
{
   cout<<" Enter the address: ";
   gets(address);
}

void addressbook::setName()
{
   cout<<" Enter the name: ";
   gets(name);
}
  
void addressbook::getName()
{
   cout<<" Name : "<<name<<" "<<endl;
}

long addressbook::setphone()
{
   cout<<" Enter the person number: ";
   cin>>ph_num;
   return ph_num;
}

void addressbook::getphone()
{
   cout<<" Person # : "<<ph_num<<endl;
}

/*class addressType :public addressbook
{
   do that

};*/

main()
{

   int s;
   cout<<" Enter number person max(500): ";
   cin>>s;
  
   addressbook book[s];
  
   for(int i=0;i<s;i++)
   {
       book[i].setName();
       book[i].setphone();
       book[i].setAddress();
       book[i].setDay();
       book[i].setMounth();
       book[i].setYear();
       book[i].setGender();

       cout<<" * ";

   }

   ofstream outf("Addressbook");

   for(int u=0;u<s;u++)
   {
       outf<<book[u].getName();
       outf<<book[u].getphone();
       outf<<book[u].getAddress();
       outf<<book[u].getGender();
       outf<<book[u].getDay();
       outf<<book[u].getMounth();
       outf<<book[u].getYear();
   }
   outf.close();
   getch();
}

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