Lab 5.1 write a program that uses random file access

Question

joewinsock 0 Newbie Poster

13 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++

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Latest Post 13 Years Ago Latest Post by Andreas5

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Andreas5 13 Junior Poster in Training

13 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 13 Years Ago by Andreas5 because: n/a

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

joewinsock 0 Newbie Poster

13 Years Ago

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

13 Years Ago

Ah, neat

Lab 5.1 write a program that uses random file access

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