Question

1. A record keeper that can store Name, Phone Number, Address, E-Mail Address, Website Address etc. of many people to a file. The records can be accessed again and can be searched to find a specified person. Use the Standard Template LibrarySTL to accomplish this project.

can I have an working example in c++ thx

Answer 1

#include <iostream>

#include <fstream>

#include <cstring>

#include <iomanip>

using namespace std;

class phoneBook

{

char name[20],phno[15];

public:

void getdata();

void showdata();

char *getname(){ return name; }

char *getphno(){ return phno; }

void update(char *nm,char *telno){

strcpy(name,nm);

strcpy(phno,telno);

}

};

void phoneBook :: getdata(){

cout<<"\nEnter Name : ";

cin>>name;

cout<<"Enter Phone No. : ";

cin>>phno;

}

void phoneBook :: showdata(){

cout<<"\n";

cout<<setw(20)<<name;

cout<<setw(15)<<phno;

}

int main(){

phoneBook rec;

fstream file;

file.open("phone.txt", ios::ate | ios::in | ios::out | ios::binary );

char c,ch,nm[20],telno[6];

int choice,cnt,found=0;

do{

cout<<"\n*****Phone Book*****\n";

cout<<"1) Add New Record\n";

cout<<"2) Display All Records\n";

cout<<"3) Search Telephone No.\n";

cout<<"4) Search Person Name\n";

cout<<"5) Update Telephone No.\n";

cout<<"6) Exit\n";

cout<<"Choose your choice : ";

cin>>choice;

switch(choice){

case 1 : //New Record

rec.getdata();

file.write((char *) &rec, sizeof(rec));

cout<<"Record Added Succesfully\n";

break;

case 2 : //Display All Records

file.seekg(0,ios::beg);

cout<<"\n\nRecords in Phone Book\n";

while(file){

file.read((char *) &rec, sizeof(rec));

if(!file.eof())

rec.showdata();

}

file.clear();

break;

case 3 : //Search Tel. no. when person name is known.

cout<<"\n\nEnter Name : ";

cin>>nm;

file.seekg(0,ios::beg);

found=0;

while(file.read((char *) &rec, sizeof(rec)))

{

if(strcmp(nm,rec.getname())==0)

{

found=1;

rec.showdata();

}

}

file.clear();

if(found==0)

cout<<"\n\n---Record Not found---\n";

break;

case 4 : //Search name on basis of tel. no

cout<<"\n\nEnter Telephone No : ";

cin>>telno;

file.seekg(0,ios::beg);

found=0;

while(file.read((char *) &rec, sizeof(rec)))

{

if(strcmp(telno,rec.getphno())==0)

{

found=1;

rec.showdata();

}

}

file.clear();

if(found==0)

cout<<"\n\n---Record Not found---\n";

break;

case 5 : //Update Telephone No.

cout<<"\n\nEnter Name : ";

cin>>nm;

file.seekg(0,ios::beg);

found=0;

cnt=0;

while(file.read((char *) &rec, sizeof(rec)))

{

cnt++;

if(strcmp(nm,rec.getname())==0)

{

found=1;

break;

}

}

file.clear();

if(found==0)

cout<<"\n\n---Record Not found---\n";

else

{

int location = (cnt-1) * sizeof(rec);

cin.get(ch);

if(file.eof())

file.clear();

cout<<"Enter New Telephone No : ";

cin>>telno;

file.seekp(location);

rec.update(nm,telno);

file.write((char *) &rec, sizeof(rec));

file.flush();

}

break;

case 6:

break;

}

cout<<"do you want to exit(y/n): ";

cin>>c;

}while(c=='n'||c=='N');

file.close();

}