Lab 5.1 write a program that uses random file access

Question

joewinsock 0 Newbie Poster

14 Years Ago

Tool.h file

#ifndef TOOL_H
#define TOOL_H

#include <string>
using std::string;

const int LENGTH = 30;

class Tool
{
	Tool ( int = -1; string = " "; int = 0; double = 0.0 );

public:
	int getPartNumber();
	int setPartNumber( void );
	char getToolName();
	int setToolName( void );
	int getInStock();
	int setInStock( void );
	int getUnitPrice();
	int setUnitPrice( void );

private:
	int partNumber;
	char toolName[ LENGTH ];
	int inStock;
	double unitPrice;

};
#endif

Tool.cpp file

#include <string>
using std::string;
#include <cstring>
using std::cstring;

using namespace std;

#include "stdafx.h"
#include "Tool.h"



void Tool::setPartNumber( int partNumber )
{
	//sets the partNumber
	partNumber = setPartNumber();
}
int Tool::getPartNumber() const
{
	return partNumber;//returns the partNumber
}
void Tool::setToolName( string toolNameString )
{
	//copy at most 30 characters from string to toolName
	const char *toolNameValue = toolNameString.data();
	int length = toolNameString.size();
	length = ( length < 30 ? length: 29 );
	strncpy( toolName, toolNameValue, length );

	//append null-terminating character to end of toolName
	toolName[ length ] = '\0';
}// end function setToolName

void Tool::getToolName( char toolName )
{
	return toolName;//returns toolName
}
void Tool::setInStock( int inStock )
{
	inStock = setInStock;//sets the inStock items
}
int Tool::getInStock() const
{
	return inStock;//returns inStock Items
}
void Tool::setUnitPrice( double unitPrice )
{
	unitPrice = setUnitPrice;//sets the setUnitPrice to unitPrice
}
void Tool::getUnitPrice( int unitPrice )
{
	return unitPrice;//returns unitPrice
}

ex17_12.cpp file

#include <iostream> 
using std::cin; 
using std::cout;
using std::endl;

#include <iomanip> 
using std::fixed;
using std::left;
using std::setprecision; 
using std::setw; 
using std::showpoint;

#include <fstream>
using std::fstream;
#include <cctype>
#include <cstdlib>


#include "stdafx.h"
#include "Tool.h"

/*// function prototypes
void initializeFile( fstream & );
void inputData( fstream & );
void listTools( fstream & );
void updateRecord( fstream & );
void insertRecord( fstream & );
void deleteRecord( fstream & );
int instructions( void );*/


// function to clear file
void initializeFile( fstream & )
{
	Tool blankItem; // empty Tool object

	// fill file with blank records
	for ( int i = 0; i < 100; i++ )
		fRef.write( reinterpret_cast< char * >( &blankItem ), sizeof( Tool ) );
} // end function initializeFile

// function that receives input
void inputData( fstream & )
{
	Tool temp; // temporary Tool object

	// temporary variables used to hold user input
	int number;
	char name[ LENGTH ];
	double price;
	int stock;

	// ask user for and set partNumber
	cout << "Enter the part number (0 - 99, -1 to end input): ";
	cin >> number;

	// set Tool members until -1 is entered
	while ( number != -1 ) 
	{
		cout << "Enter the tool name: "; // ask user for tool name
		cin.ignore(); // ignore the newline on the input stream
		cin.get( name, LENGTH ); // store tool name in variable name
		temp.setToolName( name ); // set tool member name
		temp.setPartNumber( number ); // set part number

		// ask user for quantity and price
		cout << "Enter quantity and price: "; 
		cin >> stock >> price; // store input in temporary variables
		temp.setInStock( stock ); // set inStock
		temp.setUnitPrice( price ); // set unitPrice
      
		// place file position pointer at next write location
		fRef.seekp( ( temp.getPartNumber() ) * sizeof( Tool ) );

		// write data to file
		fRef.write( reinterpret_cast< char * >( &temp ), sizeof( Tool ) );

		// ask user for next part number
		cout << "Enter the part number (0 - 99, -1 to end input): ";
		cin >> number;
	} // end while
} // end inputData

// function that decides what choice user selected
int instructions( void )
{
	int choice;

	// ask user to enter a choice
	cout << "\nEnter a choice:\n1  List all tools."
		<< "\n2  Update record.\n3  Insert record."
		<< "\n4  Delete record.\n5  End program.\n";

	// ask user for choice until a valid choice is entered
	do 
	{
		cout << "? ";
		cin >> choice;
	} 
	
	while ( choice < 1 || choice > 5 );

	return choice; // return user choice
} // end function instructions

// function that lists tools in file
void listTools( fstream &)
{
	Tool temp;

	// display column headings
	cout << setw( 7 ) << "Record#" << "    " << left 
		<< setw( 30 ) << "Tool name" << left 
		<< setw( 13 ) << "Quantity" << left << setw( 10 ) << "Cost" << endl;

	// continue until 100 tools are displayed or end of file reached
	for ( int count = 0; count < 100 && !fRef.eof(); count++ ) 
	{
		// set file position pointer and begin reading
		fRef.seekg( count * sizeof( Tool ) );      
		fRef.read( reinterpret_cast< char * >( &temp ), sizeof( Tool ) );

		// if part number is valid, display Tool information
		if ( temp.getPartNumber() >= 0 && temp.getPartNumber() < 100 ) 
		{
			cout << fixed << showpoint;
			cout << left << setw( 7 ) << temp.getPartNumber() << "    " 
				<< left << setw( 30 ) << temp.getToolName() << left 
				<< setw( 13 ) << temp.getInStock() << setprecision( 2 )
				<< left << setw( 10 ) << temp.getUnitPrice() << '\n';
		} // end if
	} // end for
} // end function listTools

// function to update a tool's information
void updateRecord( fstream & )
{
	Tool temp;
	int part;
	char name[ LENGTH ];
	int stock;
	double price;

	// ask user what part to update
	cout << "Enter the part number for update: ";
	cin >> part;

	// set file position pointer to correct tool
	fRef.seekg( part * sizeof( Tool ) );

	// read tool information
	fRef.read( reinterpret_cast< char * >( &temp ), sizeof( Tool ) );

	// display tool information if partNumber is not -1
	if ( temp.getPartNumber() != -1 ) 
	{
		cout << setw( 7 ) << "Record#" << "    " << left 
			<< setw( 30 ) << "Tool name" << left
			<< setw( 13 ) << "Quantity" << setw( 10 ) << "Cost" << endl;

		cout << fixed << showpoint;
		cout << setw( 7 ) << temp.getPartNumber() << "    " 
			<< left << setw( 30 ) << temp.getToolName() 
			<< left << setw( 13 ) << temp.getInStock() 
			<< setprecision( 2 ) << setw( 10 ) << temp.getUnitPrice() << '\n'
			<< "Enter the tool name: "; // ask user for new name

		cin.ignore(); // ignore the newline on the input stream
		cin.get( name, LENGTH ); // set new name
		temp.setToolName( name );  

		cout << "Enter quantity and price: "; // ask for price and quantity
		cin >> stock >> price;
		temp.setInStock( stock ); // set new quantity
		temp.setUnitPrice( price ); // get new price

		// set file position pointer and write information to file
		fRef.seekp( ( temp.getPartNumber() ) * sizeof( Tool ) );
		fRef.write( reinterpret_cast< char * > ( &temp ), sizeof( Tool ) );

	else

		cerr << "Cannot update. The record is empty.\n";

	} // end if
	
} // end function updateRecord

// function to insert a new record
void insertRecord( fstream & )
{
	Tool temp;
	int part;
	char name[ LENGTH ];
	int stock;
	double price;

	// ask user for part number
	cout << "Enter the part number for insertion: ";
	cin >> part;

	// set file position pointer and read data from file
	fRef.seekg( ( part ) * sizeof( Tool ) );
	fRef.read( reinterpret_cast< char * > ( &temp ), sizeof( Tool ) );

	// as long as record is empty get information from user
	if ( temp.getPartNumber() == -1 ) 
	{
		temp.setPartNumber( part ); // set partNumber
		cout << "Enter the tool name: "; // ask user for tool name
		cin.ignore(); // ignore the newline on the input stream
		cin.get( name, LENGTH ); 
		temp.setToolName( name ); // set toolName

		// ask user for new quantity and price
		cout << "Enter quantity and price: "; 
		cin >> stock >> price; 
		temp.setInStock( stock ); // set quantity
		temp.setUnitPrice( price ); // set price

		// set file position pointer and write information to file
		fRef.seekp( ( temp.getPartNumber() ) * sizeof( Tool ) );
		fRef.write( reinterpret_cast< char * >( &temp ), sizeof( Tool ) );
	
		else
		
		cerr << "Cannot insert. The record contains information.\n";

	} // end if
} // end function insertRecord

// function to delete a record
void deleteRecord( fstream & )
{
	Tool blankItem;
	Tool temp;
	int part;

	// get tool user wants to delete
	cout << "Enter the part number for deletion: ";
	cin >> part;

	// set file position pointer and read information from file
	fRef.seekg( part * sizeof( Tool ) );
	fRef.read( reinterpret_cast< char * >( &temp ), sizeof( Tool ) );

	// if record contains data, set record to an empty Tool object
	if ( temp.getPartNumber() != -1 ) 
	{
		fRef.seekp( part * sizeof( Tool ) );
		fRef.write( reinterpret_cast< char * >( &blankItem ), sizeof( Tool ) );
		cout << "Record deleted.\n";
	
	else
		
		cerr << "Cannot delete. The record is empty.\n";
	
	} // end if
      
} // end function deleteRecord

Lab5_1.cpp file also Driver File

// Lab5_1.cpp : Defines the entry point for the console application.
//
#include "stdafx.h"
#include <iostream> 
using std::cerr;
using std::cin; 
using std::cout;
using std::endl;
using std::ios;

#include <iomanip> 
using std::fixed;
using std::left;
using std::setprecision; 
using std::setw; 
using std::showpoint;

#include <fstream>
using std::fstream;

#include <cctype>

#include <cstdlib>
using std::exit;


int main()
{
	int choice; 
	char response;

	// file stream used for input and output 
	fstream file( "hardware.dat", ios::in | ios::out );
	void ( *f[] )( fstream & ) = { listTools, updateRecord, insertRecord, deleteRecord };
   
	// terminate program if file cannot be opened
	if ( !file ) 
	{
		cerr << "File could not be opened.\n";
		exit( 1 );
	} // end if

	// ask user if new file should be made
	cout << "Should the file be initialized (Y or N): ";
	cin >> response;  
	response = ( response );

	// test if user's response was valid
	while ( ( response != 'Y' ) && ( response != 'N' ) ) 
	{
		cout << "Invalid response. Enter Y or N: ";
		cin >> response;
		response = ( response );
	} // end while

	// initialize file if user says to
	if ( response == 'Y' ) 
	{
		initializeFile( file );
		inputData( file );
	} // end if

	// perform user instructions until 5 is entered
	while ( ( choice = instructions() ) != 5 ) 
	{
		( *f[ choice - 1 ] )( file );
		file.clear(); // reset eof indicator
	} // end while

	file.close(); // close input/output file
	return 0;
} // end main

I get these errors

Error 1 error C2059: syntax error : ')' c:\documents and settings\09459393\desktop\lab5_1\lab5_1\tool.h 9
Error 2 error C2447: '{' : missing function header (old-style formal list?) c:\documents and settings\09459393\desktop\lab5_1\lab5_1\tool.h 10
Error 3 error C2065: 'fstream' : undeclared identifier c:\documents and settings\09459393\desktop\lab5_1\lab5_1\ex17_12.cpp 33
Error 4 error C2059: syntax error : ')' c:\documents and settings\09459393\desktop\lab5_1\lab5_1\ex17_12.cpp 33
Error 5 error C2143: syntax error : missing ';' before '{' c:\documents and settings\09459393\desktop\lab5_1\lab5_1\ex17_12.cpp 34
Error 6 error C2447: '{' : missing function header (old-style formal list?) c:\documents and settings\09459393\desktop\lab5_1\lab5_1\ex17_12.cpp 34
Error 7 error C2059: syntax error : ')' c:\documents and settings\09459393\desktop\lab5_1\lab5_1\ex17_12.cpp 43
Error 8 error C2143: syntax error : missing ';' before '{' c:\documents and settings\09459393\desktop\lab5_1\lab5_1\ex17_12.cpp 44
Error 9 error C2447: '{' : missing function header (old-style formal list?) c:\documents and settings\09459393\desktop\lab5_1\lab5_1\ex17_12.cpp 44
Error 10 error C2065: 'cout' : undeclared identifier c:\documents and settings\09459393\desktop\lab5_1\lab5_1\ex17_12.cpp 90
Error 11 error C2065: 'cin' : undeclared identifier c:\documents and settings\09459393\desktop\lab5_1\lab5_1\ex17_12.cpp 98
Error 12 error C2059: syntax error : ')' c:\documents and settings\09459393\desktop\lab5_1\lab5_1\ex17_12.cpp 107
Error 13 error C2143: syntax error : missing ';' before '{' c:\documents and settings\09459393\desktop\lab5_1\lab5_1\ex17_12.cpp 108
Error 14 error C2447: '{' : missing function header (old-style formal list?) c:\documents and settings\09459393\desktop\lab5_1\lab5_1\ex17_12.cpp 108
Error 15 error C2059: syntax error : ')' c:\documents and settings\09459393\desktop\lab5_1\lab5_1\ex17_12.cpp 136
Error 16 error C2143: syntax error : missing ';' before '{' c:\documents and settings\09459393\desktop\lab5_1\lab5_1\ex17_12.cpp 137
Error 17 error C2447: '{' : missing function header (old-style formal list?) c:\documents and settings\09459393\desktop\lab5_1\lab5_1\ex17_12.cpp 137
Error 18 error C2059: syntax error : ')' c:\documents and settings\09459393\desktop\lab5_1\lab5_1\ex17_12.cpp 190
Error 19 error C2143: syntax error : missing ';' before '{' c:\documents and settings\09459393\desktop\lab5_1\lab5_1\ex17_12.cpp 191
Error 20 error C2447: '{' : missing function header (old-style formal list?) c:\documents and settings\09459393\desktop\lab5_1\lab5_1\ex17_12.cpp 191
Error 21 error C2059: syntax error : ')' c:\documents and settings\09459393\desktop\lab5_1\lab5_1\ex17_12.cpp 233
Error 22 error C2143: syntax error : missing ';' before '{' c:\documents and settings\09459393\desktop\lab5_1\lab5_1\ex17_12.cpp 234
Error 23 error C2447: '{' : missing function header (old-style formal list?) c:\documents and settings\09459393\desktop\lab5_1\lab5_1\ex17_12.cpp 234
Error 24 error C2065: 'listTools' : undeclared identifier c:\documents and settings\09459393\desktop\lab5_1\lab5_1\lab5_1.cpp 34
Error 25 error C2065: 'updateRecord' : undeclared identifier c:\documents and settings\09459393\desktop\lab5_1\lab5_1\lab5_1.cpp 34
Error 26 error C2065: 'insertRecord' : undeclared identifier c:\documents and settings\09459393\desktop\lab5_1\lab5_1\lab5_1.cpp 34
Error 27 error C2065: 'deleteRecord' : undeclared identifier c:\documents and settings\09459393\desktop\lab5_1\lab5_1\lab5_1.cpp 34
Error 28 error C3861: 'initializeFile': identifier not found c:\documents and settings\09459393\desktop\lab5_1\lab5_1\lab5_1.cpp 59
Error 29 error C3861: 'inputData': identifier not found c:\documents and settings\09459393\desktop\lab5_1\lab5_1\lab5_1.cpp 60
Error 30 error C3861: 'instructions': identifier not found c:\documents and settings\09459393\desktop\lab5_1\lab5_1\lab5_1.cpp 64
Error 31 fatal error C1903: unable to recover from previous error(s); stopping compilation c:\documents and settings\09459393\desktop\lab5_1\lab5_1\lab5_1.cpp 64
Error 32 error C2059: syntax error : ')' c:\documents and settings\09459393\desktop\lab5_1\lab5_1\tool.h 9
Error 33 error C2447: '{' : missing function header (old-style formal list?) c:\documents and settings\09459393\desktop\lab5_1\lab5_1\tool.h 10
Error 34 error C2027: use of undefined type 'Tool' c:\documents and settings\09459393\desktop\lab5_1\lab5_1\tool.cpp 13
Error 35 error C2660: 'setPartNumber' : function does not take 0 arguments c:\documents and settings\09459393\desktop\lab5_1\lab5_1\tool.cpp 16
Error 36 error C2027: use of undefined type 'Tool' c:\documents and settings\09459393\desktop\lab5_1\lab5_1\tool.cpp 18
Error 37 error C2270: 'getPartNumber' : modifiers not allowed on nonmember functions c:\documents and settings\09459393\desktop\lab5_1\lab5_1\tool.cpp 19
Error 38 error C2065: 'partNumber' : undeclared identifier c:\documents and settings\09459393\desktop\lab5_1\lab5_1\tool.cpp 20
Error 39 error C2027: use of undefined type 'Tool' c:\documents and settings\09459393\desktop\lab5_1\lab5_1\tool.cpp 22
Warning 40 warning C4267: 'initializing' : conversion from 'size_t' to 'int', possible loss of data c:\documents and settings\09459393\desktop\lab5_1\lab5_1\tool.cpp 26
Error 41 error C2065: 'toolName' : undeclared identifier c:\documents and settings\09459393\desktop\lab5_1\lab5_1\tool.cpp 28
Error 42 error C2027: use of undefined type 'Tool' c:\documents and settings\09459393\desktop\lab5_1\lab5_1\tool.cpp 34
Error 43 error C2562: 'getToolName' : 'void' function returning a value c:\documents and settings\09459393\desktop\lab5_1\lab5_1\tool.cpp 36
Error 44 error C2027: use of undefined type 'Tool' c:\documents and settings\09459393\desktop\lab5_1\lab5_1\tool.cpp 38
Error 45 error C2440: '=' : cannot convert from 'void (__cdecl *)(int)' to 'int' c:\documents and settings\09459393\desktop\lab5_1\lab5_1\tool.cpp 40
Error 46 error C2027: use of undefined type 'Tool' c:\documents and settings\09459393\desktop\lab5_1\lab5_1\tool.cpp 42
Error 47 error C2270: 'getInStock' : modifiers not allowed on nonmember functions c:\documents and settings\09459393\desktop\lab5_1\lab5_1\tool.cpp 43
Error 48 error C2065: 'inStock' : undeclared identifier c:\documents and settings\09459393\desktop\lab5_1\lab5_1\tool.cpp 44
Error 49 error C2027: use of undefined type 'Tool' c:\documents and settings\09459393\desktop\lab5_1\lab5_1\tool.cpp 46
Error 50 error C2440: '=' : cannot convert from 'void (__cdecl *)(double)' to 'double' c:\documents and settings\09459393\desktop\lab5_1\lab5_1\tool.cpp 48
Error 51 error C2027: use of undefined type 'Tool' c:\documents and settings\09459393\desktop\lab5_1\lab5_1\tool.cpp 50
Error 52 error C2562: 'getUnitPrice' : 'void' function returning a value c:\documents and settings\09459393\desktop\lab5_1\lab5_1\tool.cpp 52

c++

2 Contributors
3 Replies
276 Views
8 Hours Discussion Span
Latest Post 14 Years Ago Latest Post by Andreas5

Andreas5 13 Junior Poster in Training

14 Years Ago

You must start on the top and work your way around all the errors.
EDIT: I started looking in Tool.h and half the stuff was missing or wrong, you have to start with something alot easier.

#ifndef TOOL_H
#define TOOL_H

#include <string>
using std::string;

const int LENGTH = 30;

class Tool
{
	//Tool ( int = -1; string = " "; int = 0; double = 0.0; ); 
	Tool(int i, char* s, int i2, double d)
	{ partNumber = i; toolName = s; inStock = i2; unitPrice = d; }

	Tool() { partNumber = 0; toolName = ""; inStock = 0; unitPrice = 0; } // You need a default constructor
public:
	//int getPartNumber();
	int getPartNumber() const;
	//int setPartNumber( void );
	//void setPartNumber();
	void setPartNumber(int);
	char* getToolName();
	//int setToolName( void );
	//void setToolName();
	void setToolName(string);
	//int getInStock();
	int getInStock() const;
	//int setInStock( void );
	void setInStock(int);
	int getUnitPrice();
	//int setUnitPrice( void );
	//int setUnitPrice();
	void setUnitPrice(double);

private:
	int partNumber;
	//char toolName[ LENGTH ];
	char* toolName;
	int inStock;
	double unitPrice;

};
#endif

Edited 14 Years Ago by Andreas5 because: n/a

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joewinsock 0 Newbie Poster · Answer 1 · 2010-07-21T07:50:31+00:00

i fixed it all thank you though..I got it running

Andreas5 13 Junior Poster in Training Team Colleague · Answer 2 · 2010-07-21T07:51:17+00:00

Andreas5 13 Junior Poster in Training

14 Years Ago

Ah, neat