Question

My professor provided a very vague description of what he wants us to do with the example code from the book. I have provided the picture of his description and the code from the book we need to alter. I'm already struggling with this course and I'll probably have to post another question on a different problem I'm stuck on.

If you can help it would be highly appreciated.

Description Change code for double, string, C-string with appropriate convert constructors and getter methods...

Answer 1

Thanks for the question, here are the 7 files. For each type there are tow files - 1).h file 2) .cpp file. And the 7th file is the main file

DoubleClass.h file and DoubleClass.cpp file

StringClass.h file and StringClass.cpp file

CStringClass.h file and CStringClass.cpp file

Main.cpp file

=======================================================================

#ifndef STRINGCLASS_H

#define STRINGCLASS_H

#include<string>

using std::string;

class StringClass

{

                public:

                                StringClass(const string&);

                                string getValue() const;

                private:

                                string value;

};

#endif

==================================================================

#include "StringClass.h"

#include<string>

using std::string;

StringClass::StringClass(const string& val) : value(val){}

string StringClass::getValue() const{return value;}

               

////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

#ifndef DOUBLECLASS_H

#define DOUBLECLASS_H

class DoubleClass

{

                public:

                                DoubleClass(double);

                                double getValue() const;

                private:

                                double value;

};

#endif

==================================================================

#include "DoubleClass.h"

DoubleClass::DoubleClass(double val) : value(val){}

double DoubleClass::getValue() const{return value;}

               

////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

#ifndef CSTRINGCLASS_H

#define CSTRINGCLASS_H

class CStringClass

{

                public:

                                CStringClass(const char* );

                                char* getValue() const;

                                ~CStringClass();

                private:

                                char *value;

};

#endif

==================================================================

#include "CStringClass.h"

#include<cstring>

using namespace std;

               

CStringClass::CStringClass(const char* val){

                int length = strlen(val);

                value = new char[length+1];

                strcpy(value,val);

}

CStringClass::~CStringClass(){

               

                delete[] value;

}

char* CStringClass::getValue() const{

                int length = strlen(value);

                char* p_value = new char[length+1];

                strcpy(p_value,value);

               

                return p_value;

               

}

////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

// Main.cpp file

#include <iostream>

#include "StringClass.h"

#include "CStringClass.h"

#include "DoubleClass.h"

#include<string>

using namespace std;

int main(){

               

                StringClass myStringClass = StringClass("Hello!");

               

                cout<<myStringClass.getValue()<<endl;

               

                DoubleClass myDoubleClass = 3.14159;

                cout<<myDoubleClass.getValue()<<endl;

               

                CStringClass myCStringClass ("Hi How are You?");

                cout<<myCStringClass.getValue()<<endl;

}

////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////