Book shop system in c++

 A bookshop system in c++ using classes

Code here:

#include<iostream>

#include<string.h>

#include<stdlib.h>

using namespace std;

class book {

private:

char *author,*title,*publisher;

float *price;

int *stock;

public:

book() {

author= new char[20];

title=new char[20];

publisher=new char[20];

price= new float;

stock=new int;

}

void feeddata();

void editdata();

void showdata();

int search(char[],char[]);

void buybook();

};

void book::feeddata() {

cin.ignore();

cout<<"\nEnter Author Name: ";      cin.getline(author,20);

cout<<"Enter Title Name: ";       cin.getline(title,20);

cout<<"Enter Publisher Name: ";   cin.getline(publisher,20);

cout<<"Enter Price: ";            cin>>*price;

cout<<"Enter Stock Position: ";   cin>>*stock;   

}

void book::editdata() {

cout<<"\nEnter Author Name: ";      cin.getline(author,20);

cout<<"Enter Title Name: ";       cin.getline(title,20);

cout<<"Enter Publisher Name: ";   cin.getline(publisher,20);

cout<<"Enter Price: ";            cin>>*price;

cout<<"Enter Stock Position: ";   cin>>*stock;   

}

void book::showdata() {

cout<<"\nAuthor Name: "<<author;

cout<<"\nTitle Name: "<<title;

cout<<"\nPublisher Name: "<<publisher;

cout<<"\nPrice: "<<*price;

cout<<"\nStock Position: "<<*stock;   

}

int book::search(char tbuy[20],char abuy[20] ) {

if(strcmp(tbuy,title)==0 && strcmp(abuy,author)==0)

return 1;

else return 0;

}

void book::buybook() {

int count;

cout<<"\nEnter Number Of Books to buy: ";

cin>>count;

if(count<=*stock) {

*stock=*stock-count;

cout<<"\nBooks Bought Sucessfully";

cout<<"\nAmount: Rs. "<<(*price)*count;

}

else

cout<<"\nRequired Copies not in Stock";

}

int main() {

book *B[20];

int i=0,r,t,choice;

char titlebuy[20],authorbuy[20];

while(1) {

cout<<"\n\n\t\tMENU"

<<"\n1. Entry of New Book"

<<"\n2. Buy Book"

<<"\n3. Search For Book"

<<"\n4. Edit Details Of Book"

<<"\n5. Exit"

<<"\n\nEnter your Choice: ";

cin>>choice;

switch(choice) {

case 1: B[i] = new book;

B[i]->feeddata();

i++; break;

case 2: cin.ignore();

cout<<"\nEnter Title Of Book: "; cin.getline(titlebuy,20);

cout<<"Enter Author Of Book: ";  cin.getline(authorbuy,20);

for(t=0;t<i;t++) {

if(B[t]->search(titlebuy,authorbuy)) {

B[t]->buybook();

break;

}

}

if(t==1)

cout<<"\nThis Book is Not in Stock";

break;

case 3: cin.ignore();

cout<<"\nEnter Title Of Book: "; cin.getline(titlebuy,20);

cout<<"Enter Author Of Book: ";  cin.getline(authorbuy,20);

for(t=0;t<i;t++) {

if(B[t]->search(titlebuy,authorbuy)) {

cout<<"\nBook Found Successfully";

B[t]->showdata();

break;

}

}

if(t==i)

cout<<"\nThis Book is Not in Stock";

break;

case 4: cin.ignore();

cout<<"\nEnter Title Of Book: "; cin.getline(titlebuy,20);

cout<<"Enter Author Of Book: ";  cin.getline(authorbuy,20);

for(t=0;t<i;t++) {

if(B[t]->search(titlebuy,authorbuy)) {

cout<<"\nBook Found Successfully";

B[t]->editdata();

break;

}

}

if(t==i)

cout<<"\nThis Book is Not in Stock";

break;

case 5: exit(0);

default: cout<<"\nInvalid Choice Entered";

}

}

return 0;

}