Welcome to Rohith's C++ website

Index of programs:Set 5

Becoming more complex

Process telphones database using structures

Process bank account using class in online mode

Process students database using files

Process bank account using files. ...Coming Soon

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Program1:

#include<iostream.h>
#include<conio.h>
#include<string.h>
#include<stdio.h>
/* 
   Author        : Rohith.R
   Email         : rrohithr@gmail.com
   Category      : Begineer
   Program       : To input telephone database and search records using specified option
   Meant For     : Plus Two students,Kerala

*/
struct telephone
{
char name[25];
unsigned long int phone;
}customer[50];

void main()
{
int n;
clrscr();
cout<<"\n Enter how many records you want";
cin>>n;
for(int i=1;i<=n;i++)
{
cout<<"\n \n Enter customer name:";
gets(customer[i].name);
cout<<"\n \n Enter phone number:";
cin>>customer[i].phone;
}
clrscr();
int option,k;

do
{
 cout<<"\n\n Enter search parameter";
 cout<<"\n\n Option 1: Search name";
 cout<<"\n\n Option 2: Search phone";
 cout<<"\n\n Option 3: Quit";
 cout<<"\n\n Option ?:";cin>>option;
 switch(option)
 {
 case 1:
 unsigned long int sphone;
 cout<<"\n\n Enter phone number";
 cin>>sphone;
 for(i=1;i<=n;i++)
 if(sphone==customer[i].phone)
 break;
 if(i<=n)
 {
 cout<<"\n\n Customer name  :"<<customer[i].name;
 cout<<"\n\n Customer phone :"<<customer[i].phone;
 }
 else
 cout<<"\n\n Record not found";
 break;

case 2:
 char sname[25];
 cout<<"\n Enter name:";
 gets(sname);
 for(i=1;i<=n;i++)
 {
 k=strcmp(sname,customer[i].name);
 if(k==0)
 break;
 }
 if(i<=n)
 {
 cout<<"\n\n Customer name:"<<customer[i].name;
 cout<<"\n\n Customer phone:"<<customer[i].phone;
 }
 else
 cout<<"\n\n Record not found";
 break;
 default:
 return;
 }
 getch();

}while(option!=3);
 cout<<"\n Press any key to continue";
 getch();
 }

Program 2:

int i=0;
int cons=1;
// Both in global declaration

#include<iostream.h>
#include<conio.h>
#include<math.h>
#include<stdio.h>
#include<ctype.h>

/*
   Author        : Rohith.R
   Email         : rrohithr@gmail.com
   Category      : Begineer
   Program       : To process a bank account in online mode no saving.Uses class
   Meant For     : Plus Two students,Kerala

class bank
{
int acno;
char name[25];
float balance;
int actype;
public:
friend check();
void init();
void depositor();
void withdraw();
void display();
};
void bank::init()
{
acno=i;
balance=0;
cout<<"\n Your account number is:"<<acno;
cout<<"\n Enter name of depositor:";
gets(name);
cout<<"\n Enter account type:";
cin>>actype;
float tempdep;
do
{
cout<<"\n Your first deposit:";
cin>>tempdep;
}while(tempdep<100);
balance+=tempdep;
cout<<"\n You have activated your account";
}
void bank::depositor()
{
float tempdep;
cout<<"\n Enter how much sum you want to deposit";
cin>>tempdep;
tempdep=abs(tempdep);
cout<<"\n Your deposit has been accepted";
balance+=tempdep;
}
void bank::withdraw()
{
float tempdep;
cout<<"\n Your account has a balance of"<<balance;
cout<<"\n Enter amount towithdraw";
cin>>tempdep;
tempdep=abs(tempdep);
// Feels !! awkward some  what here

if(tempdep<=balance-100)
{
 cout<<"\n\n You have withdrawn an amount of Rs:"<<tempdep;
 balance-=tempdep;
 }
 else
 {
 cout<<"\n You are allowed to take an amount of Rs:"<<balance-100;
 cout<<"\n Enter the amount you want:";
 cin>>tempdep;
 tempdep=abs(tempdep);
 if(tempdep<=balance-100)
 {
 cout<<"\n\n You have withdrawn an amount of Rs:"<<tempdep;
 tempdep=abs(tempdep);
 balance-=tempdep;
 }
 else
 cout<<"\n You are not allowed to withdraw";
 }}
 int check(int x)
 {
 if(x<=i && x>1)
 {
 return(0);
 }
 return(1);
 }
 void bank::display()
 {
 cout<<"\n Depositor name:"<<name;
 cout<<"\n Depositor accno:"<<acno;
 cout<<"\n Depositor actype:"<<actype;
 cout<<"\n Depsotor account balance:"<<balance;
 }
 void main()
 {
 int option,temp;
 bank customer[50];
 // Memory wastage.Dont you know.But as a beginner be with this.New and delete operators are coming
 clrscr();
 do
 {
 cout<<"\n\n Option 1: Start an account";
 cout<<"\n\n Optiom 2: Deposit an amount";
 cout<<"\n\n Option 3: Withdraw an amount";
 cout<<"\n\n Option 4: Display account details";
 cout<<"\n\n Option 5: Quit";
 cout<<"\n\n Option ?:";cin>>option;

switch(option)
 {
 case 1:
 clrscr();
 i++;
 cons=0;
 customer[i].init();
 break;

case 2:
 clrscr();
 if(cons==0)
 {
 cout<<"\n Enter your account number:";
 cin>>temp;
 int v=check(temp);
 if(v==0)
 customer[temp].depositor();
 else
 cout<<"\n Account number not found in database";
 }
 else
 cout<<"\n Account section empty";
 break;

case 3:
 if(cons==0)
 {
 cout<<"\n Enter your account number:";
 cin>>temp;
 int v=check(temp);
 if(v==0)
 customer[temp].withdraw();
 else
cout<<"\n Account number not found in database";
 }
 else
cout<<"\n Account section empty";
break;

case 4:
clrscr();
if(cons==0)
{
cout<<"\n Enter your account number:";
cin>>temp;
int v=check(temp);
if(v==0)
customer[temp].display();
}
else
cout<<"\n Account section empty";
break;

case 5:
return;
}
getch();
}while(option!=5);
cout<<"\n Press any key to continue";
getch();

}

Program 3:

#include<iomanip.h>
#include<fstream.h>
#include<conio.h>
#include<process.h>
#include<stdio.h>

/*
   Author        : Rohith.R
   Email         : rrohithr@gmail.com
   Category      : Begineer
   Program       : To edit the details of student database.Three functions included.
   Meant For     : Plus Two students,Kerala

*/
int i=0;
fstream utilizer;  // First usage of fstream is here
void print(int);
void printall();
class student
{
private:
int  roll;
char name[15];
int totals;
int m1,m2,m3,m4,m5,m6;      // I just dont use array thats all
public:
void input();
void total();
friend void print();
friend void printall();
};
void student::total()
{
totals=m1+m2+m3+m4+m5+m6;
}
void student::input()
{
cout<<"\n Enter student name:";
gets(name);
cout<<"\n Enter roll number:";
cin>>roll;
cout<<"\n Enter six marks";
cin>>m1;
cin>>m2;
cin>>m3;
cin>>m4;
cin>>m5;
cin>>m6;
}
void print()
{
student ob;
ifstream utilizer("stud.dat",ios::in);
if(!utilizer)
{
cout<<"\n Error opening file";
getch();
exit(0);
}
else
{
cout<<"\n Enter roll number";
int y;
cin>>y;
while (utilizer)
{
utilizer.read((char *)&ob,sizeof(ob));
if(ob.roll==y)
{
clrscr();
cout<<"\n Student name :"<<ob.name;
cout<<"\n Student roll :"<<ob.roll;
cout<<"\n Marks are    :";
cout<<ob.m1<<ob.m2<<ob.m3<<ob.m4<<ob.m5<<ob.m6;
// if want separate using /t
cout<<"\n Total        :"<<ob.totals;
}}}}

void printall()
{
student ob;
ifstream utilizer("stud.dat",ios::in);
if(!utilizer)
{
cout<<"\n Cannot open file";
getch();
exit(0);
}
else
{
while(utilizer.tellg()!=i)
{
 utilizer.read((char *)&ob,sizeof(ob));
 cout<<"\n\n\n";
 cout<<"\t"<<ob.name<<"\t"<<ob.roll<<"\t"
 <<ob.m1<<"\t"<<ob.m2<<"\t"<<ob.m3<<"\t"
 <<ob.m4<<"\t"<<ob.m5<<"\t"<<ob.m6<<"\t"<<ob.totals;
// Formatting may be varied .So use builtin functions like gotxy
}
}
}

void main()
{
utilizer.open("stud.dat",ios::in);
utilizer.seekg(0,ios::end);
i=utilizer.tellp(); // Finding the end of file stud.dat
utilizer.close();
int option;
student stud;

do
{
clrscr();
cout<<"\n Option  1: Add new details";
cout<<"\n Option  2: Display a particular detail";
cout<<"\n Option  3: Display all details";
cout<<"\n Option  4: Exit";
cout<<"\n Option  ?:";cin>>option;

switch(option)
{
case 1:
stud.input();
stud.total();
utilizer.open("stud.dat",ios::out||ios::app);
utilizer.write((char *)&stud,sizeof(stud));
i=utilizer.tellp();  // Updating i
utilizer.close();
break;

case 2:
print();
case 3:
cout<<"\n MARKSHEET OF ________________SCHOOL ";
cout<<"\n*****************************************";
cout<<"\n\t Name \t  Roll \t Mark1 \t Mark2 \t Mark 3 \t Mark 4 \t Mark 5 \t Total Mark\n";
// User can adjust the output format as required using builtin functions
printall();
break;

case 4:
return;
};
getch();
}while(option!=-1);
cout<<"\n Press any key to continue";
getch();
}

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