Member Avatar for abhaymv

Hai,

I have just finished a program 'Library information system'.There might be logical errors in the program.How should I go about testing it?I have put a small set of values, and it seems to work alright.But, tips from you guys would be helpful as this is my first software.(Not my first program)

Can Daniweb help me test programs?If its against the rules, Some tips would help....

#include<fstream.h>
#include<process.h>
#include<conio.h>
#include<stdio.h>
class books
{
  int bcopies,choice;
  char bcode[6],bname[20],bauth[15];
 public:
  void init();
  void update();//issue or return book
  void bshow();//Display book info
};
void books::init()
{
	clrscr();
	cout<<"Enter book name: ";
	gets(bname);
	cout<<"Enter the book code:";
	gets(bcode);
	cout<<"Enter the name of the author:";
	gets(bauth);
	cout<<"Enter the number of copies present:";
	cin>>bcopies;
}
void books::update()
{
	clrscr();
	cout<<"Would you like to:\n1.Issue Book?\n2.Return book?\nEnter your choice:";
	cin>>choice;
	if(choice==1)
	{
		if(bcopies>=1)
			bcopies--;
		else
			cout<<"No book left.\n";
	}
	else if(choice==2)
		bcopies++;
	else
		cout<<"Invalid choice";
}
void books::bshow()
{
	cout.width(6);cout<<bcode;
	cout.width(25);cout<<bname;
	cout.width(20);cout<<bauth;
	cout.width(20);cout<<bcopies;
	cout<<"\n";
}
class user
{
	int nbooks;   //no of book with user
	char uname[15];
    public:
	void inituser()
	{
		clrscr();
		cout<<"Enter name   :"; gets(uname);
		cout<<"Enter the no of books with user :";
		cin>>nbooks;
       }
       void uupdate()
       {
		cout<<"Enter the current no of books with user :";
		cin>>nbooks;
		cout<<"Press any key to countinue :";
		getch();
       }
       void udisp()
       {
		cout.width(18);
		cout<<uname;cout.width(18);
		cout<<nbooks<<"\n";
      }
};
int choice,cho;
void main()
{
    do
    {
     clrscr();
     fstream file,ufile;
     file.open("library.dat",ios::in|ios::ate|ios::out|ios::binary);
     ufile.open("user.dat",ios::in|ios::out|ios::ate|ios::binary);
     int choice,bno,usno;
     books B;
     user U;
     cout<<"\n\t\t\t\tWelcome to AKSHARA";
     cout<<"\nWhat would you like to do?";
     cout<<"\n1.Add new book.\n2.Issue/return book.\n3.Edit book info.\n4.Show book info.\n5.Add new user.\n6.Update user info.\n7.View user info.\n8.Delete data base .\n9.About\n10.Quit.\nEnter your choice: ";
     cin>>choice;
     if(choice==1)
     {
	char ch;
	ch='y';
	while(ch=='y'||ch=='Y')
	{
		clrscr();
		B.init();
		file.write((char*)&B,sizeof(B));
		cout<<"Continue?(y/n):";
		cin>>ch;
		if(ch=='n'||ch=='N')
			break;
	};
     }
     else if(choice==2)
     {
       cout<<"\nEnter the sl.no. of the book :";
       cin>>bno;
       int loc=(bno-1)*(sizeof(books));
       file.seekg(loc);
       file.read((char*)&B,sizeof(books));
       B.update();
       file.seekp(loc);
       file.write((char*)&B,sizeof(books));
       file.seekp(0,ios::end);
     }
     else if(choice==3)
     {
	cout<<"Enter the serial no. of the book:";
	cin>>bno;
	int loc=(bno-1)*sizeof(books);
	if(file.eof())
		file.clear();
	file.seekp(loc);
	B.init();
	file.write((char*)&B,sizeof(B));
     }
	else if(choice==4)
	{
	file.seekg(0);
	clrscr();
	int i=1;
	cout<<"\n Books information:\n";
	cout.width(6);
	cout<<"Sl.No";
	cout.width(6);
	cout<<"Code";
	cout.width(25);
	cout<<"Book name";
	cout.width(20);
	cout<<"Author";
	cout.width(20);
	cout<<"Copies";
	cout<<"\n";
	while(file.read((char*)&B,sizeof(books)))
	{
		cout.width(6);
		cout<<i;i++;
		B.bshow();

	};
	}
	else if(choice==5)
	{
	char ch='y';
	while(ch=='y'||ch=='Y')
	{
		clrscr();
		U.inituser();
		ufile.write((char*)&U,sizeof(user));
		cout<<"Continue?(y/n):";
		cin>>ch;
		if(ch=='n'||ch=='N')
			break;
	};
	}
	else if(choice==6)
	{
		cout<<"Enter the serial number to be edited:";
		cin>>usno;
		int loc=(usno-1)*sizeof(user);
		if(ufile.eof())
			ufile.clear();
		ufile.seekp(loc);
		U.uupdate();
		ufile.write((char*)&U,sizeof(user));
		ufile.seekp(0,ios::end);
	}
	else if(choice==7)
	{
		clrscr();
		int i=1;
		cout.width(6);cout<<"Sl.no";
		cout.width(18);
		cout<<"User name";
		cout.width(18);
		cout<<"No. of books\n";
		ufile.seekg(0);
		while(ufile.read((char*)&U,sizeof(user)))
		{
			cout.width(6);
			cout<<i;
			U.udisp();i++;
		};
	}
	else if(choice==8)
	{
		clrscr();
		cout<<"\nWould you like to :\n1.Delete user database?\n2.Delete Books Database?\n";
		cout<<"\n\t\t\t\t WARNING!\t\t\t\t\n\t\t\tALL PREVIOUS DATA WILL BE LOST.\n";
		cout<<"\nEnter your choice:";
		int ch;
		cin>>ch;
		if(ch==1)
		{
			ufile.close();
			ufile.open("user.dat",ios::out);
		}
		else if(ch==2)
		{
			file.close();
			file.open("library.dat",ios::out);
		}
		else
			cout<<"Invalid choice\n";
	}
	else if(choice==9)
	{
		clrscr();
		cout<<"\n\t\t\t\tAKSHARA\n\n\n\tVersion 1.0\n\n\n\tCreated by group 5,+2 Computer Science";
		cout<<"\n\n\n\tLibrary information system software.";
		cout<<"\n\n\n\tPress any key to continue.";
		getch();
	}
	else if(choice==10)
	{
		file.close();
		ufile.close();
		exit(0);
	}
	else
		cout<<"Invalid choice.";
	cout<<"\nQuit?(yes=1,no=2)";

	cin>>cho;
	if(cho==1)
		exit(0);

	}while(cho==2);
	getch();
}
  • 2 Contributors
  • 1 Reply
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  • 8 Hours Discussion Span
  • Latest Post Latest Post by mrnutty
Member Avatar for mrnutty

Test all cases if you can. If not then test the extrema. Then test randomly.
More test the better.

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