Arrays with Pointers!

[code]
//Resistor.h


#ifndef RESISTOR_H

#define RESISTOR_H

enum resistorValues{NOMINAL,TOLERANCE,MAX,MIN};

class Resistor {

private:

            static int ResCounter;

            double* ptrRes;

            char* ResName;

public:

            Resistor();//default constructor

            //argument constructor

            Resistor(const string, double nominalResistance, double Tolerance);

            //fuction getName

            void getName();

            //to display

            void DisplayResistor(void);

            //

            void EnterResistance(void);

            ~Resistor();

};
#endif
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[code]
// Resistor.cpp
// Programmer Wendell Riggins
// 07/23/2012

#include "Resistor.h"
#include <iostream>
#include <iomanip>
using namespace std;

int Resistor::ResCounter = 0;

Resistor::Resistor()

{

            ptrRes=new double[4];

             //default values

            ptrRes[NOMINAL]=1000;

            ptrRes[TOLERANCE]=.10;

             //calculate min and max values

            ptrRes[MIN]=ptrRes[NOMINAL]-(ptrRes[NOMINAL] * ptrRes[TOLERANCE]);

            ptrRes[MAX]=ptrRes[NOMINAL]+(ptrRes[NOMINAL] * ptrRes[TOLERANCE]);

            ResName = NULL;

             Resistor::ResCounter++;

}

Resistor::Resistor(const string&,double nominalResistance,double Tolerance)

{

            ptrRes=new double[4];

             //default values

            ptrRes[NOMINAL]=nominalResistance;

            ptrRes[TOLERANCE]=Tolerance;

             //calculate min and max values

            ptrRes[MIN]=ptrRes[NOMINAL]-(ptrRes[NOMINAL] * ptrRes[TOLERANCE]);

            ptrRes[MAX]=ptrRes[NOMINAL]+(ptrRes[NOMINAL] * ptrRes[TOLERANCE]);

             //Resistors Name

            int length=(int)name.length();

            ResName=new char[length+ 1];

            strcpy_s(ResName,length+1,name.c_str());

             //Increments number of resistor objects that exist

            Resistor::ResCounter++;

}

Resistor::~Resistor()

{

            delete[]ptrRes;

            delete[]ResName;

            ptrRes=NULL;

            ResName=NULL;

            Resistor::ResCounter--;

}

void Resistor::getName()

{

            string Name;

            cout<<"Enter resistors name: ";

            cin >> Name;

            int length=(int)Name.length();

            if(ResName)

            {

                        delete[] ResName;

        ResName=NULL;

            }



            ResName=new char[length+ 1];

            strcpy_s(ResName,length+1,Name.c_str());

}

void Resistor::DisplayResistor ()

{

//Displays all Resistor object data members

            //sets the output parameters

            cout << setprecision(2);

            cout << fixed << showpoint;

             //displays the output

            cout << "\n\n";

            cout << setprecision(5) << fixed << showpoint << setfill(' ');

            cout << "Values for " << *ResName << " are:\n";

            cout << left  << setw(25) << "Resistor Nominal Value = "

                           << right << setw(10) <<  ptrRes[NOMINAL] << "\n";

            cout << left  << setw(25) << "ohms Resistor Tolerance = "

                           << right << setw(10) <<  (100*ptrRes[TOLERANCE]) <<"%"<< "\n";

            cout << left  << setw(25) << "Minimum Resistance = "

                           << right << setw(10) << ptrRes[MIN] <<" ohms"<< "\n";

            cout << left  << setw(25) << "Maximum Resistance = "

                           << right << setw(10) << ptrRes[MAX] <<" ohms" <<"\n";

}
[/code]
[code]
//Filename:  ResistorMain.cpp
//Description: Contains CResistor class test function
//Class:  COMP 220
//Student Name:  Wendell Riggins

//main .cpp

#include <iostream>

#include <iomanip>

#include <string>

#include "Resistor.h"

 using namespace std;

 int main()

{

            //creating object for resistor

            Resistor resistor;

            //calling getname function

            resistor.getName();

            //displying resistor

            resistor.DisplayResistor();

            system("pause");

            return 0;

}
[/code]
[code]
1>------ Build started: Project: Lab5_Pointers, Configuration: Debug Win32 ------
1>Build started 8/8/2012 7:00:12 PM.
1>InitializeBuildStatus:
1>  Touching "Debug\Lab5_Pointers.unsuccessfulbuild".
1>ClCompile:
1>  ResistorMain.cpp
1>c:\users\lauren\documents\visual studio 2010\projects\lab5_pointers\lab5_pointers\resistor.h(30): error C2380: type(s) preceding 'Resistor' (constructor with return type, or illegal redefinition of current class-name?)
1>c:\users\lauren\documents\visual studio 2010\projects\lab5_pointers\lab5_pointers\resistor.h(30): error C4430: missing type specifier - int assumed. Note: C++ does not support default-int
1>  Resistor.cpp
1>c:\users\lauren\documents\visual studio 2010\projects\lab5_pointers\lab5_pointers\resistor.h(30): error C2380: type(s) preceding 'Resistor' (constructor with return type, or illegal redefinition of current class-name?)
1>c:\users\lauren\documents\visual studio 2010\projects\lab5_pointers\lab5_pointers\resistor.h(30): error C4430: missing type specifier - int assumed. Note: C++ does not support default-int
1>c:\users\lauren\documents\visual studio 2010\projects\lab5_pointers\lab5_pointers\resistor.cpp(38): error C2511: 'Resistor::Resistor(const std::string &,double,double)' : overloaded member function not found in 'Resistor'
1>          c:\users\lauren\documents\visual studio 2010\projects\lab5_pointers\lab5_pointers\resistor.h(14) : see declaration of 'Resistor'
1>c:\users\lauren\documents\visual studio 2010\projects\lab5_pointers\lab5_pointers\resistor.cpp(92): error C2678: binary '>>' : no operator found which takes a left-hand operand of type 'std::istream' (or there is no acceptable conversion)
1>          c:\program files (x86)\microsoft visual studio 10.0\vc\include\istream(1053): could be 'std::basic_istream<_Elem,_Traits> &std::operator >><std::char_traits<char>>(std::basic_istream<_Elem,_Traits> &&,signed char *)'
1>          with
1>          [
1>              _Elem=char,
1>              _Traits=std::char_traits<char>
1>          ]
1>          c:\program files (x86)\microsoft visual studio 10.0\vc\include\istream(1060): or       'std::basic_istream<_Elem,_Traits> &std::operator >><std::char_traits<char>>(std::basic_istream<_Elem,_Traits> &&,signed char &)'
1>          with
1>          [
1>              _Elem=char,
1>              _Traits=std::char_traits<char>
1>          ]
1>          c:\program files (x86)\microsoft visual studio 10.0\vc\include\istream(1067): or       'std::basic_istream<_Elem,_Traits> &std::operator >><std::char_traits<char>>(std::basic_istream<_Elem,_Traits> &&,unsigned char *)'
1>          with
1>          [
1>              _Elem=char,
1>              _Traits=std::char_traits<char>
1>          ]
1>          c:\program files (x86)\microsoft visual studio 10.0\vc\include\istream(1074): or       'std::basic_istream<_Elem,_Traits> &std::operator >><std::char_traits<char>>(std::basic_istream<_Elem,_Traits> &&,unsigned char &)'
1>          with
1>          [
1>              _Elem=char,
1>              _Traits=std::char_traits<char>
1>          ]
1>          c:\program files (x86)\microsoft visual studio 10.0\vc\include\istream(1097): or       'std::basic_istream<_Elem,_Traits> &std::operator >><std::char_traits<char>>(std::basic_istream<_Elem,_Traits> &,signed char *)'
1>          with
1>          [
1>              _Elem=char,
1>              _Traits=std::char_traits<char>
1>          ]
1>          c:\program files (x86)\microsoft visual studio 10.0\vc\include\istream(1104): or       'std::basic_istream<_Elem,_Traits> &std::operator >><std::char_traits<char>>(std::basic_istream<_Elem,_Traits> &,signed char &)'
1>          with
1>          [
1>              _Elem=char,
1>              _Traits=std::char_traits<char>
1>          ]
1>          c:\program files (x86)\microsoft visual studio 10.0\vc\include\istream(1111): or       'std::basic_istream<_Elem,_Traits> &std::operator >><std::char_traits<char>>(std::basic_istream<_Elem,_Traits> &,unsigned char *)'
1>          with
1>          [
1>              _Elem=char,
1>              _Traits=std::char_traits<char>
1>          ]
1>          c:\program files (x86)\microsoft visual studio 10.0\vc\include\istream(1118): or       'std::basic_istream<_Elem,_Traits> &std::operator >><std::char_traits<char>>(std::basic_istream<_Elem,_Traits> &,unsigned char &)'
1>          with
1>          [
1>              _Elem=char,
1>              _Traits=std::char_traits<char>
1>          ]
1>          c:\program files (x86)\microsoft visual studio 10.0\vc\include\istream(1128): or       'std::basic_istream<_Elem,_Traits> &std::operator >><char,std::char_traits<char>,std::string>(std::basic_istream<_Elem,_Traits> &&,_Ty &)'
1>          with
1>          [
1>              _Elem=char,
1>              _Traits=std::char_traits<char>,
1>              _Ty=std::string
1>          ]
1>          c:\program files (x86)\microsoft visual studio 10.0\vc\include\istream(179): or       'std::basic_istream<_Elem,_Traits> &std::basic_istream<_Elem,_Traits>::operator >>(std::basic_istream<_Elem,_Traits> &(__cdecl *)(std::basic_istream<_Elem,_Traits> &))'
1>          with
1>          [
1>              _Elem=char,
1>              _Traits=std::char_traits<char>
1>          ]
1>          c:\program files (x86)\microsoft visual studio 10.0\vc\include\istream(185): or       'std::basic_istream<_Elem,_Traits> &std::basic_istream<_Elem,_Traits>::operator >>(std::basic_ios<_Elem,_Traits> &(__cdecl *)(std::basic_ios<_Elem,_Traits> &))'
1>          with
1>          [
1>              _Elem=char,
1>              _Traits=std::char_traits<char>
1>          ]
1>          c:\program files (x86)\microsoft visual studio 10.0\vc\include\istream(192): or       'std::basic_istream<_Elem,_Traits> &std::basic_istream<_Elem,_Traits>::operator >>(std::ios_base &(__cdecl *)(std::ios_base &))'
1>          with
1>          [
1>              _Elem=char,
1>              _Traits=std::char_traits<char>
1>          ]
1>          c:\program files (x86)\microsoft visual studio 10.0\vc\include\istream(199): or       'std::basic_istream<_Elem,_Traits> &std::basic_istream<_Elem,_Traits>::operator >>(std::_Bool &)'
1>          with
1>          [
1>              _Elem=char,
1>              _Traits=std::char_traits<char>
1>          ]
1>          c:\program files (x86)\microsoft visual studio 10.0\vc\include\istream(218): or       'std::basic_istream<_Elem,_Traits> &std::basic_istream<_Elem,_Traits>::operator >>(short &)'
1>          with
1>          [
1>              _Elem=char,
1>              _Traits=std::char_traits<char>
1>          ]
1>          c:\program files (x86)\microsoft visual studio 10.0\vc\include\istream(253): or       'std::basic_istream<_Elem,_Traits> &std::basic_istream<_Elem,_Traits>::operator >>(unsigned short &)'
1>          with
1>          [
1>              _Elem=char,
1>              _Traits=std::char_traits<char>
1>          ]
1>          c:\program files (x86)\microsoft visual studio 10.0\vc\include\istream(272): or       'std::basic_istream<_Elem,_Traits> &std::basic_istream<_Elem,_Traits>::operator >>(int &)'
1>          with
1>          [
1>              _Elem=char,
1>              _Traits=std::char_traits<char>
1>          ]
1>          c:\program files (x86)\microsoft visual studio 10.0\vc\include\istream(298): or       'std::basic_istream<_Elem,_Traits> &std::basic_istream<_Elem,_Traits>::operator >>(unsigned int &)'
1>          with
1>          [
1>              _Elem=char,
1>              _Traits=std::char_traits<char>
1>          ]
1>          c:\program files (x86)\microsoft visual studio 10.0\vc\include\istream(316): or       'std::basic_istream<_Elem,_Traits> &std::basic_istream<_Elem,_Traits>::operator >>(long &)'
1>          with
1>          [
1>              _Elem=char,
1>              _Traits=std::char_traits<char>
1>          ]
1>          c:\program files (x86)\microsoft visual studio 10.0\vc\include\istream(334): or       'std::basic_istream<_Elem,_Traits> &std::basic_istream<_Elem,_Traits>::operator >>(unsigned long &)'
1>          with
1>          [
1>              _Elem=char,
1>              _Traits=std::char_traits<char>
1>          ]
1>          c:\program files (x86)\microsoft visual studio 10.0\vc\include\istream(354): or       'std::basic_istream<_Elem,_Traits> &std::basic_istream<_Elem,_Traits>::operator >>(__int64 &)'
1>          with
1>          [
1>              _Elem=char,
1>              _Traits=std::char_traits<char>
1>          ]
1>          c:\program files (x86)\microsoft visual studio 10.0\vc\include\istream(373): or       'std::basic_istream<_Elem,_Traits> &std::basic_istream<_Elem,_Traits>::operator >>(unsigned __int64 &)'
1>          with
1>          [
1>              _Elem=char,
1>              _Traits=std::char_traits<char>
1>          ]
1>          c:\program files (x86)\microsoft visual studio 10.0\vc\include\istream(392): or       'std::basic_istream<_Elem,_Traits> &std::basic_istream<_Elem,_Traits>::operator >>(float &)'
1>          with
1>          [
1>              _Elem=char,
1>              _Traits=std::char_traits<char>
1>          ]
1>          c:\program files (x86)\microsoft visual studio 10.0\vc\include\istream(411): or       'std::basic_istream<_Elem,_Traits> &std::basic_istream<_Elem,_Traits>::operator >>(double &)'
1>          with
1>          [
1>              _Elem=char,
1>              _Traits=std::char_traits<char>
1>          ]
1>          c:\program files (x86)\microsoft visual studio 10.0\vc\include\istream(429): or       'std::basic_istream<_Elem,_Traits> &std::basic_istream<_Elem,_Traits>::operator >>(long double &)'
1>          with
1>          [
1>              _Elem=char,
1>              _Traits=std::char_traits<char>
1>          ]
1>          c:\program files (x86)\microsoft visual studio 10.0\vc\include\istream(447): or       'std::basic_istream<_Elem,_Traits> &std::basic_istream<_Elem,_Traits>::operator >>(void *&)'
1>          with
1>          [
1>              _Elem=char,
1>              _Traits=std::char_traits<char>
1>          ]
1>          c:\program files (x86)\microsoft visual studio 10.0\vc\include\istream(466): or       'std::basic_istream<_Elem,_Traits> &std::basic_istream<_Elem,_Traits>::operator >>(std::basic_streambuf<_Elem,_Traits> *)'
1>          with
1>          [
1>              _Elem=char,
1>              _Traits=std::char_traits<char>
1>          ]
1>          while trying to match the argument list '(std::istream, std::string)'
1>  Generating Code...
1>
1>Build FAILED.
1>
1>Time Elapsed 00:00:02.24
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========
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