address book program.txt

Address book program

Program : Address Book Program in C/C . 
--------------------------------------------------------------------------------

/*
Language: C\C++ (To convert to C, just change cout to printf and cin to scanf and change the library files)
Category: Data Base
Description: The program is an address book using concepts of
file(random file access and all that)
*/
#include<stdio.h>
#include<stdlib.h>
#include<fstream.h>
#include<string.h>
#include<conio.h>
#define ENTER 13
#define BACK 8


struct student
{
  char name[30];
  char proff[40];
  char address[20];
  char country[20];
  char tel[20];
  char fax[20];
  char mobile[20];
  char email[50];
};

class data
{
private:
  student std;
  int j,count;
  char sname[50],pass[10],c;
public:
  struct student getData();
  void showData(struct student);
  void saveData();
  int readData();
  void delet();
  void modify();
  void searchData();
  void emergency();
  void password();
  int checkpass();
  void modpass();
  char* takepass();
  int checkvalidity(char []);
};

student data::getData()
{
	  cout<<"Name          : ";
	  gets(std.name);
	  cout<<"Proffession   : ";
	  gets(std.proff);
	  cout<<"Address       : ";
	  gets(std.address);
	  cout<<"Country       : ";
	  gets(std.country);
	  cout<<"Telephone     : ";
	  gets(std.tel);
	  cout<<"Fax           : ";
	  gets(std.fax);
	  cout<<"Mobile        : ";
	  gets(std.mobile);
	  cout<<"E.mail        : ";
	  gets(std.email);
}
void data:: showData(student str)
{
	 clrscr();
	 cout<<"\nName         : "<<str.name;
	 cout<<"\nProffession  : "<<str.proff;
	 cout<<"\nAddress      : "<<str.address;
	 cout<<"\nCountry      : "<<str.country;
	 cout<<"\nTelephone    : "<<str.tel;
	 cout<<"\nFax          : "<<str.fax;
	 cout<<"\nMobile       : "<<str.mobile;
	 cout<<"\nE.mail       : "<<str.email;
	 getch();
}
void data::modify()
{
	 char dname[30];
	 int l;
	 int coutn=0,choice;
	 int k=0;
	 l=checkpass();
	 if(l==1)
	 {
	 cout<<"\nPlease mention the name to be modified : ";
	 cin>>dname;
	 fstream infile;
	 infile.open("tata.Dat",ios::in|ios::out);
	 infile.seekg(0);
	 if(infile)
	 {
	 while(infile.read((char *)&std,sizeof(student)))
	 {
	    coutn++;
	    char ans='y';
	    if(stricmp(std.name,dname)==0)
	    {
	    k=1;
	    while(ans=='y'||ans=='Y')
	    {
	    clrscr();
	    cout<<"What do you want to
modify\n1.Name\n2.Proffession\n3.Address ";
	    cout<<"\n4.Country\n5.Telephone Number\n6.Fax Number\n7.Mobile";
	    cout<<"\n8.E-mail\t";
	    cin>>choice;
	    switch(choice)
	    {
		  case 1:
			cout<<"Name          : ";
			cin>>std.name;
			break;
		  case 2:
			cout<<"Proffession   : ";
			cin>>std.proff;
			break;
		  case 3:
			cout<<"Address       : ";
			cin>>std.address;
			break;
		  case 4:
			cout<<"Country       : ";
			cin>>std.country;
			break;
		  case 5:
			cout<<"Telephone     : ";
			cin>>std.tel;
			break;
		  case 6:
			cout<<"Fax           : ";
			cin>>std.fax;
			break;
		  case 7:
			cout<<"Mobile        : ";
			cin>>std.mobile;
			break;
		  case 8:
			cout<<"E-mail        : ";
			cin>>std.email;
			break;
		  default:
			cout<<"Wrong choice ";
			break;
	    }
	    cout<<"\nAnything More to modify ";
	    cin>>ans;
         }
	    infile.seekp((coutn-1)*sizeof(student));
	    infile.write((char *)&std,sizeof(student));
	    }
	 }
	 if(k!=1)
	    cout<<"The name doesn't exist ";
	 else
	    cout<<"The name has been successfully modified ";
	 }
	 }
	 else
	    cout<<"access denied ";
	    getch();
}
void data::delet()
{
	 char dname[30];
	 int coutn=0;
	 int k=0;
	 if(checkpass()==1)
	 {
	 cout<<"\n\nPlease mention the name to be deleted : ";
	 gets(dname);
	 fstream infile;
	 infile.open("tata.Dat",ios::in|ios::out);
	 infile.seekg(0);
	 if(infile)
	 {
	 while(infile.read((char *)&std,sizeof(student)))
	 {
	    coutn++;
	    if(stricmp(std.name,dname)==0)
	    {
	    k=1;
	    strcpy(std.name," ");
	    strcpy(std.proff," ");
	    strcpy(std.address," ");
	    strcpy(std.country," ");
	    strcpy(std.tel," ");
	    strcpy(std.fax," ");
	    strcpy(std.mobile," ");
	    strcpy(std.email," ");
	    infile.seekp((coutn-1)*sizeof(student));
	    infile.write((char *)&std,sizeof(student));
	    break;
	    }
	 }
	 if(k!=1)
	    cout<<"The name doesn't exist ";
	 else
	    cout<<"The name has been successfully deleted ";
	 }
	 }
	 else
	    cout<<"\n\nAccess Denied ";
	 getch();
}

void data:: saveData()
{
	 ofstream outfile;
	 outfile.open("tata.Dat",ios::app);
	 outfile.write( (char *)&std,sizeof(student));
}
int data::readData()
{
	 count=0;
	 ifstream infile;
	 infile.open("tata.Dat",ios::app);
	 if(infile)
	 {
	 while(infile.read((char *)&std,sizeof(student)))
	 {
	    if(strcmp(std.name," ")!=0)
	    showData(std);
	    count++;
	 }
	 }
	 else
	 cout<<"no file";
	 return(count);
}
void data::emergency()
{
	 char emer[30];
	 int j=0;
	 cout<<"Please type the name to be searched: ";
	 gets(emer);
	 ifstream infile;
	 infile.open("tata.Dat",ios::nocreate);
	 while(infile.read((char *)&std,sizeof(student)))
		{
		if(stricmp(emer,std.proff)==0)
		{
		j=1;
		showData(std);
		}
	 }
	 if(j==0)
	 cout<<"Sorry the name doesn't exist";
	 getch();
}
void data::searchData()
{
	 j=0;
	 cout<<"Please type the name to be searched: ";
	 gets(sname);
	 ifstream infile;
	 infile.open("tata.Dat",ios::nocreate);
	 while(infile.read((char *)&std,sizeof(student)))
		{
		if(stricmp(sname,std.name)==0)
		{
		j=1;
		showData(std);
		}
	 }
	 if(j==0)
	 cout<<"Sorry the name doesn't exist";
}
void data::password()
{
	 char fre[20];
	 int pd;
	 clrscr();
	 cout<<endl<<endl<<"Password ";
	 strcpy(fre,takepass());
	 pd=checkvalidity(fre);
	 clrscr();
	 if(pd==1)
		 cout<<"This password already exist Please try for new password ";
	 else
	 {
		 strcpy(pass,fre);
		 ofstream passfile;
		 passfile.open("pass.dat",ios::app);
		 passfile.write(pass,sizeof(pass));
		 cout<<"Passwords are sensitive do not lend it ";
	 }
}
int data::checkvalidity(char fre[])
{
	 int idm=0;
	 ifstream passfile;
	 passfile.open("pass.dat",ios::app);
	 while(passfile.read(pass,sizeof(pass)))
	 {
	    if(stricmp(fre,pass)==0)
	    {
		 idm=1;
		 break;
	    }
	 }
	 return idm;
}


void data::modpass()
{
  char d[20],npass[20];
  clrscr();
  int me=0,in=0;
  cout<<endl<<endl<<"Old Password ";
  strcpy(d,takepass());

  fstream infile;
  infile.open("pass.dat",ios::out|ios::in);
  {
	  while(infile.read(pass,sizeof(pass)))
	  {
		 me++;
		 if(strcmp(d,pass)==0)
		 {
		    in=1;
		    cout<<"\nOK the password exist ";
		    getch();
			clrscr();
			cout<<endl<<endl<<"New password ";
		    strcpy(pass,takepass());
			infile.seekp((me-1)*sizeof(pass));
	    infile.write(pass,sizeof(pass));
		 }
	  }
  }
  if(in==0)
   cout<<"\nThe password doesn't exist ";
  else
   cout<<"\nThe password has been successfully modified ";
   getch();
}

int data::checkpass()
{
	 char da[20];
	 int z=0,to=0,u=0;
	 clrscr();
	 ifstream passfile;
	 passfile.open("pass.dat",ios::app);
	while(to<1&&z!=1)
	 {
	 to++;
	 cout<<endl<<endl<<"Your password ";
	 strcpy(da,takepass());
	 passfile.seekg(0);
	 while(passfile.read(pass,sizeof(pass)))
	 {
		clrscr();
		if(strcmp(da,pass)==0)
		 {
		    z=1;
		    break;

		 }
	 }
	 }
	 return z;
}
char* data::takepass()
{
	  char ma[20],pa[20];
	 int q=0,row=30,col=3;
	 int i=0;
	 gotoxy(30,3);
/*	 cout<<"                                    ";
	 gotoxy*/
		while((c=getch())!=ENTER)
		{

			if(c==BACK)
			{
			   gotoxy((row-1),col);
			   cout<<" ";
			   row--;
			   i--;
			}
			else
			{
			   ma[i]=c;
			   i++;
			   gotoxy(row,col);
			   cout<<"*";
			   row++;
			}
		 }
		 ma[i]='\0';
		 strcpy(pa,ma);
           clrscr();
		 return pa;
}
void main()
{
	 int ch,i,k,a;
	 char choice,sm[20];
	 data s;
      srand(time(NULL));
	 a=1+(rand()%100);
      textcolor(WHITE);
	 while(1)
	 {
	    clrscr();
	    cout<<"Your Choices";
	    cout<<"\n1.Enter datas\n2.Read From File\n3.Search
data\n4.ModifyData\n5.DeleteData\n6.View Emergency Contacts\t";
	    cout<<"\n7.Create New Password\n8.Modify Password\n9.Exit\t";
	    cin>>ch;
	    switch(ch)
	    {
		 case 1:
			 cout<<"How many datas do u want to feed " ;
			 cin>>i;
			 for(k=0;k<i;k++)
			 {
			    s.getData( );
			    s.saveData();
			 }
		 break;
		 case 2:
			 s.readData();
			 getch();
		 break;
		 case 3:
			 s.searchData();
			 getch();
		 break;
		 case 4:
			 s.modify();
			 break;
		 case 5:
			 s.delet();
			 break;
		 case 9:
			 exit(0);
		 case 7:
			cout<<"Please mention Your institution ";
			cin>>sm;
			if((strcmpi(sm,"himalayan")==0)&&(a%4==0))
			s.password();
			else
			if((strcmpi(sm,"himalayan")==0)&&(a%4!=0))
			{
			clrscr();

			textcolor(LIGHTRED+BLINK);
               gotoxy(25,10);
			cprintf("SORRY THE SYSTEM IS BUSY ");
			//			cout<<"\nSORRY THE SYSTEM IS BUSY ";
			}
			else
			{
			  clrscr();
                 gotoxy(25,10);
			  textcolor(LIGHTRED+BLINK);
			  cprintf("YOU ARE NOT THE LEGAL PERSON ");
//			  cout<<"\nYOU ARE NOT THE LEGAL PERSON ";
			}
			  getch();
                 textcolor(WHITE);
			break;
		 case 8:
			s.modpass();
			break;
		 case 6:
			s.emergency();
			break;
		 default:
			 cout<<"\nWrong Choice ";
			 getch();
	    }
	 }
getch();
}