C++ || Class – Roman Numeral To Integer & Integer To Roman Numeral Conversion

April 10, 2012 admin No comments

Click Here For Updated Version Of Program

The following is another homework assignment which was presented in a C++ Data Structures course. This program was assigned in order to practice the use of the class data structure, which is very similar to the struct data structure.

REQUIRED KNOWLEDGE FOR THIS PROGRAM

Header Files - How To Use Them Class - What Is It? Do/While Loop Passing a Value By Reference Roman Numerals - How Do You Convert To Decimal? Online Roman Numeral Converter - Check For Correct Results

This is an interactive program in which the user has the option of selecting from 7 modes of operation. Of those modes, the user has the option of entering in roman numerals for conversion, entering in decimal numbers for conversion, displaying the recently entered number, and finally converting between roman or decimal values.

A sample of the menu is as followed:
(Where the user would enter numbers 1-7 to select a choice)





		
		
			From the following menu:

1.  Enter a Decimal number
2.  Enter a Roman Numeral
3.  Convert from Decimal to Roman
4.  Convert from Roman to Decimal
5.  Print the current Decimal number
6.  Print the current Roman Numeral
7.  Quit

Please enter a selection:
			
				
					
				
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						From the following menu:
 
1.  Enter a Decimal number
2.  Enter a Roman Numeral
3.  Convert from Decimal to Roman
4.  Convert from Roman to Decimal
5.  Print the current Decimal number
6.  Print the current Roman Numeral
7.  Quit
 
Please enter a selection:

This program was implemented into 3 different files (two .cpp files, and one header file .h). So the code for this program will be broken up into 3 sections, the main file (.cpp), the header file (.h), and the implementation of the functions within the header file (.cpp).

======== FILE #1 – Menu.cpp ========

NOTE: On some compilers, you may have to add #include < cstdlib> in order for the code to compile.





		
		
			File #1 - Menu.cpp
			
C++
			
			// ============================================================================
//  File: Menu.cpp
//  Purpose: Converts a number enetered in Decimal to Roman Numeral and a 
//  Roman Numeral to a Decimal Number 
// ============================================================================
#include <iostream>
#include <iomanip>
#include <string>
#include "ClassRomanType.h"
using namespace std;

// function prototypes
void DisplayMenu();
int GetCommand(int command);
void RunChoice(int command, ClassRomanType& romanObject);

int main()
{
	int command=7;	// Holds which action the user chooses to make
	ClassRomanType	romanObject;	// Gives access to the class

	do{
		DisplayMenu();
		command = GetCommand(command);
		RunChoice(command, romanObject);
		cout<<"n--------------------------------------------------------------------n";
	}while(command!=7);

	cout<<"nBye!n";

	return 0;
}// End of main

void RunChoice(int command, ClassRomanType& romanObject)
{// Function: Execute the choice selected from the menu

	// declare private variables
	int decimalNumber=0;	// Holds decimal value
	char romanNumeral[150];	//Holds value of roman numeral

	// execute the desired choice
	cout <<"ntYou selected choice #"<<command<<" which will: ";
	switch(command)
	{
	case 1:
		cout << "Get Decimal Numbernn";
		cout <<"Enter a Decimal Number: ";
		cin >> decimalNumber;
		romanObject.GetDecimalNumber(decimalNumber);
		break;
	case 2:
		cout << "Get Roman Numeralnn";
		cout <<"nEnter a Roman Numeral: ";
		cin >> romanNumeral;
		romanObject.GetRomanNumeral(romanNumeral);
		break;
	case 3:
		cout << "Convert from Decimal to Romannn";
		romanObject.ConvertDecimalToRoman();
		cout<<"Running....nComplete!n";
		break;
	case 4:
		cout << "Convert from Roman to Decimalnn";
		romanObject.ConvertRomanToDecimal();
		cout<<"Running....nComplete!n";
		break;
	case 5:
		cout << "Print the current Decimal numbernn";
		cout<<"n The current Roman to Decimal Value is: "; 
		cout << romanObject.ReturnDecimalNumber()<<endl;
		break;
	case 6:
		cout << "Print the current Roman Numeralnn";
		cout<<"n The current Decimal to Roman Value is: "; 
		cout << romanObject.ReturnRomanNumber()<<endl;
		break;
	case 7:
		cout << "Quitnn";
		break;
	default:
		cout << "nError, you entered an invalid command!nPlease try again...";
		break;
	}
}//End of RunChoice

int GetCommand(int command)
{// Function: Gets choice from menu
	cout <<"nPlease enter a selection: ";
	cin>> command;
	return command;
}// End of GetCommand

void DisplayMenu()
{// Function: Displays menu
	cout <<"From the following menu:n"<<endl;
	cout <<left<<setw(2)<<"1."<<left<<setw(15)<<"  Enter a Decimal number"<<endl;
	cout <<left<<setw(2)<<"2."<<left<<setw(15)<<"  Enter a Roman Numeral"<<endl;
	cout <<left<<setw(2)<<"3."<<left<<setw(15)<<"  Convert from Decimal to Roman"<<endl;
	cout <<left<<setw(2)<<"4."<<left<<setw(15)<<"  Convert from Roman to Decimal"<<endl;
	cout <<left<<setw(2)<<"5."<<left<<setw(15)<<"  Print the current Decimal number"<<endl;
	cout <<left<<setw(2)<<"6."<<left<<setw(15)<<"  Print the current Roman Numeral"<<endl;
	cout <<left<<setw(2)<<"7."<<left<<setw(15)<<"  Quit"<<endl;
}// http://programmingnotes.org/
			
				
					
				
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						// ============================================================================
//  File: Menu.cpp
//  Purpose: Converts a number enetered in Decimal to Roman Numeral and a 
//  Roman Numeral to a Decimal Number 
// ============================================================================
#include <iostream>
#include <iomanip>
#include <string>
#include "ClassRomanType.h"
using namespace std;
 
// function prototypes
void DisplayMenu();
int GetCommand(int command);
void RunChoice(int command, ClassRomanType& romanObject);
 
int main()
{
	int command=7;	// Holds which action the user chooses to make
	ClassRomanType	romanObject;	// Gives access to the class
 
	do{
		DisplayMenu();
		command = GetCommand(command);
		RunChoice(command, romanObject);
		cout<<"n--------------------------------------------------------------------n";
	}while(command!=7);
 
	cout<<"nBye!n";
 
	return 0;
}// End of main
 
void RunChoice(int command, ClassRomanType& romanObject)
{// Function: Execute the choice selected from the menu
 
	// declare private variables
	int decimalNumber=0;	// Holds decimal value
	char romanNumeral[150];	//Holds value of roman numeral
 
	// execute the desired choice
	cout <<"ntYou selected choice #"<<command<<" which will: ";
	switch(command)
	{
	case 1:
		cout << "Get Decimal Numbernn";
		cout <<"Enter a Decimal Number: ";
		cin >> decimalNumber;
		romanObject.GetDecimalNumber(decimalNumber);
		break;
	case 2:
		cout << "Get Roman Numeralnn";
		cout <<"nEnter a Roman Numeral: ";
		cin >> romanNumeral;
		romanObject.GetRomanNumeral(romanNumeral);
		break;
	case 3:
		cout << "Convert from Decimal to Romannn";
		romanObject.ConvertDecimalToRoman();
		cout<<"Running....nComplete!n";
		break;
	case 4:
		cout << "Convert from Roman to Decimalnn";
		romanObject.ConvertRomanToDecimal();
		cout<<"Running....nComplete!n";
		break;
	case 5:
		cout << "Print the current Decimal numbernn";
		cout<<"n The current Roman to Decimal Value is: "; 
		cout << romanObject.ReturnDecimalNumber()<<endl;
		break;
	case 6:
		cout << "Print the current Roman Numeralnn";
		cout<<"n The current Decimal to Roman Value is: "; 
		cout << romanObject.ReturnRomanNumber()<<endl;
		break;
	case 7:
		cout << "Quitnn";
		break;
	default:
		cout << "nError, you entered an invalid command!nPlease try again...";
		break;
	}
}//End of RunChoice
 
int GetCommand(int command)
{// Function: Gets choice from menu
	cout <<"nPlease enter a selection: ";
	cin>> command;
	return command;
}// End of GetCommand
 
void DisplayMenu()
{// Function: Displays menu
	cout <<"From the following menu:n"<<endl;
	cout <<left<<setw(2)<<"1."<<left<<setw(15)<<"  Enter a Decimal number"<<endl;
	cout <<left<<setw(2)<<"2."<<left<<setw(15)<<"  Enter a Roman Numeral"<<endl;
	cout <<left<<setw(2)<<"3."<<left<<setw(15)<<"  Convert from Decimal to Roman"<<endl;
	cout <<left<<setw(2)<<"4."<<left<<setw(15)<<"  Convert from Roman to Decimal"<<endl;
	cout <<left<<setw(2)<<"5."<<left<<setw(15)<<"  Print the current Decimal number"<<endl;
	cout <<left<<setw(2)<<"6."<<left<<setw(15)<<"  Print the current Roman Numeral"<<endl;
	cout <<left<<setw(2)<<"7."<<left<<setw(15)<<"  Quit"<<endl;
}// http://programmingnotes.org/

======== FILE #2 – ClassRomanType.h ========

Remember, you need to name the header file the same as the #include from the Menu.cpp file. This file contains the function declarations, but no implementation of those functions takes place here.





		
		
			File #2 - ClassRomanType.h
			
C++
			
			// ============================================================================
//  File:  ClassRomanType.h
//  Purpose:  Header file for Roman Numeral conversion. It contains all
//  declarations and prototypes for the class members to carry out the 
//  conversion
// ============================================================================
#include <string>
using namespace std;

class   ClassRomanType
{
public:
    ClassRomanType();
          /*   Function: constructor initializes class variables to "0"
               Precondition: none
               Postcondition: defines private variables */

	// member functions
    void GetDecimalNumber(int  decimalNumber);
          /*   Function: gets decimal number
			Precondition: none
			Postcondition: Gets arabic number from user */

    void GetRomanNumeral(char romanNumeral[]);
          /*   Function: gets roman numeral
			Precondition: none
			Postcondition: Gets roman numeral from user */

    void ConvertDecimalToRoman();
          /*   Function: converts decimal number to ronman numeral
			Precondition: arabic and roman numeral characters should be known
			Postcondition: Gets roman numeral from user */

    void ConvertRomanToDecimal();
          /*   Function: converts roman numeral to arabic number 
			Precondition: arabic and roman numeral characters should be known
			Postcondition: Gets decimal number from user */

    int ReturnDecimalNumber();
          /*   Function: displays converted decimal number 
			Precondition: the converted roman numeral to decimal number
			Postcondition: displays decimal number to user */

    string ReturnRomanNumber();
          /*   Function: displays converted roman numeral 
			Precondition: the converted decimal number to roman numeral
			Postcondition: displays roman numeral to user */

    ~ClassRomanType();
          /*   Function: destructor used to return memory to the system 
			Precondition: the converted decimal number to roman numeral
			Postcondition: none */

private:
	char	m_romanValue[150];  // An array holding the roman value within the class
	int	m_decimalValue;	// Holds the final output answer of the roman to decimal conversion
}; // http://programmingnotes.org/
			
				
					
				
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						// ============================================================================
//  File:  ClassRomanType.h
//  Purpose:  Header file for Roman Numeral conversion. It contains all
//  declarations and prototypes for the class members to carry out the 
//  conversion
// ============================================================================
#include <string>
using namespace std;
 
class   ClassRomanType
{
public:
    ClassRomanType();
          /*   Function: constructor initializes class variables to "0"
               Precondition: none
               Postcondition: defines private variables */
 
	// member functions
    void GetDecimalNumber(int  decimalNumber);
          /*   Function: gets decimal number
			Precondition: none
			Postcondition: Gets arabic number from user */
 
    void GetRomanNumeral(char romanNumeral[]);
          /*   Function: gets roman numeral
			Precondition: none
			Postcondition: Gets roman numeral from user */
 
    void ConvertDecimalToRoman();
          /*   Function: converts decimal number to ronman numeral
			Precondition: arabic and roman numeral characters should be known
			Postcondition: Gets roman numeral from user */
 
    void ConvertRomanToDecimal();
          /*   Function: converts roman numeral to arabic number 
			Precondition: arabic and roman numeral characters should be known
			Postcondition: Gets decimal number from user */
 
    int ReturnDecimalNumber();
          /*   Function: displays converted decimal number 
			Precondition: the converted roman numeral to decimal number
			Postcondition: displays decimal number to user */
 
    string ReturnRomanNumber();
          /*   Function: displays converted roman numeral 
			Precondition: the converted decimal number to roman numeral
			Postcondition: displays roman numeral to user */
 
    ~ClassRomanType();
          /*   Function: destructor used to return memory to the system 
			Precondition: the converted decimal number to roman numeral
			Postcondition: none */
 
private:
	char	m_romanValue[150];  // An array holding the roman value within the class
	int	m_decimalValue;	// Holds the final output answer of the roman to decimal conversion
}; // http://programmingnotes.org/

======== FILE #3 – RomanType.cpp ========

This is the function implementation file for the ClassRomanType.h class. This file can be named anything you wish as long as you #include “ClassRomanType.h”





		
		
			File #3 - RomanType.cpp
			
C++
			
			// ============================================================================
//  File:  RomanType.cpp
//  Purpose:  Contains the implementation of the class members for the 
//  roman numeral conversion
//  
//  *NOTE*: Uncomment cout statements to visualize whats happening
// ============================================================================
#include <iostream>
#include <string> 
#include <cstring>
#include "ClassRomanType.h"
using namespace std;

ClassRomanType::ClassRomanType()
{
	m_decimalValue=0;
	strcpy(m_romanValue,"Currently Undefined");
}// end of ClassRomanType

void ClassRomanType:: GetDecimalNumber(int decimalNumber)
{
	m_decimalValue = decimalNumber;
}// end of GetDecimalNumber

void ClassRomanType:: GetRomanNumeral(char romanNumeral[])
{
	strcpy(m_romanValue,romanNumeral);
}// end of GetRomanNumeral

void ClassRomanType:: ConvertDecimalToRoman()
{ 
	strcpy(m_romanValue,""); // erases any previous data
	int numericValue[]={1000,900,500,400,100,90,50,40,10,9,5,4,1,0};
	char *romanNumeral[]={"M","CM","D","CD","C","XC","L"
									,"XL","X","IX","V","IV","I",0};
	
	for (int x=0; numericValue[x] > 0; ++x)
	{
		//cout<<endl<<numericValue[x]<<endl;
		while (m_decimalValue >= numericValue[x])
		{
			//cout<<"current m_decimalValue = " <<m_decimalValue<<endl;
			//cout<<"current numericValue = "<<numericValue[x]<<endl<<endl;
			if(strlen(m_romanValue)==0)
			{
				strcpy(m_romanValue,romanNumeral[x]);
			}
			else
			{
				strcat(m_romanValue,romanNumeral[x]);
			}
			m_decimalValue  -= numericValue[x];
		}
	}
}// end of ConvertDecimalToRoman

void ClassRomanType:: ConvertRomanToDecimal()
{
	 int currentNumber = 0;	// Holds value of each letter numerical value
	 int previousNumber = 0; // Holds the numerical value being compared 
	 m_decimalValue=0; // Resets the current 'romanToDecimalValue' to zero

	 if(strcmp(m_romanValue,"Currently Undefined")!=0)
	 {
		 for (int counter = strlen(m_romanValue)-1; counter >= 0; counter--)
		 {
			 if ((m_romanValue[counter] == 'M') || (m_romanValue[counter] == 'm'))
			 {
				 currentNumber = 1000;
			 }
			 else if ((m_romanValue[counter] == 'D') || (m_romanValue[counter] == 'd'))
			 {
				 currentNumber = 500;
			 }
			 else if ((m_romanValue[counter] == 'C') || (m_romanValue[counter] == 'c'))
			 {
				 currentNumber = 100;
			 }
			 else if ((m_romanValue[counter] == 'L') || (m_romanValue[counter] == 'l'))
			 {
				 currentNumber = 50;
			 }
			 else if ((m_romanValue[counter] == 'X') || (m_romanValue[counter] == 'x'))
			 {
				 currentNumber = 10;
			 }
			 else if ((m_romanValue[counter] == 'V') || (m_romanValue[counter] == 'v'))
			 {
				 currentNumber = 5;
			 }  
			 else if ((m_romanValue[counter] == 'I') || (m_romanValue[counter] == 'i'))
			 {
				 currentNumber = 1;
			 }
			 else
			 {
				 currentNumber = 0;
			 }
			 //cout<<"previousNumber = " <<previousNumber<<endl;
			 //cout<<"currentNumber = " <<currentNumber<<endl;

			 if (previousNumber > currentNumber)
			 {
				 m_decimalValue -= currentNumber;
				 previousNumber = currentNumber;
			 }
			 else
			 {
				 m_decimalValue += currentNumber;
				 previousNumber = currentNumber;
			 }	
			 //cout<<"current m_decimalValue = " <<m_decimalValue<<endl<<endl;
		 }
	 }
}// end of ConvertRomanToDecimal

int ClassRomanType::ReturnDecimalNumber()
{
	return m_decimalValue;
}// end of ReturnDecimalNumber

string ClassRomanType::ReturnRomanNumber()
{
	return  m_romanValue;
}// end of ReturnRomanNumber

ClassRomanType::~ClassRomanType()
{
	m_decimalValue=0;
	strcpy(m_romanValue,"Currently Undefined");
}// http://programmingnotes.org/
			
				
					
				
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						// ============================================================================
//  File:  RomanType.cpp
//  Purpose:  Contains the implementation of the class members for the 
//  roman numeral conversion
//  
//  *NOTE*: Uncomment cout statements to visualize whats happening
// ============================================================================
#include <iostream>
#include <string> 
#include <cstring>
#include "ClassRomanType.h"
using namespace std;
 
ClassRomanType::ClassRomanType()
{
	m_decimalValue=0;
	strcpy(m_romanValue,"Currently Undefined");
}// end of ClassRomanType
 
void ClassRomanType:: GetDecimalNumber(int decimalNumber)
{
	m_decimalValue = decimalNumber;
}// end of GetDecimalNumber
 
void ClassRomanType:: GetRomanNumeral(char romanNumeral[])
{
	strcpy(m_romanValue,romanNumeral);
}// end of GetRomanNumeral
 
void ClassRomanType:: ConvertDecimalToRoman()
{ 
	strcpy(m_romanValue,""); // erases any previous data
	int numericValue[]={1000,900,500,400,100,90,50,40,10,9,5,4,1,0};
	char *romanNumeral[]={"M","CM","D","CD","C","XC","L"
									,"XL","X","IX","V","IV","I",0};
	
	for (int x=0; numericValue[x] > 0; ++x)
	{
		//cout<<endl<<numericValue[x]<<endl;
		while (m_decimalValue >= numericValue[x])
		{
			//cout<<"current m_decimalValue = " <<m_decimalValue<<endl;
			//cout<<"current numericValue = "<<numericValue[x]<<endl<<endl;
			if(strlen(m_romanValue)==0)
			{
				strcpy(m_romanValue,romanNumeral[x]);
			}
			else
			{
				strcat(m_romanValue,romanNumeral[x]);
			}
			m_decimalValue  -= numericValue[x];
		}
	}
}// end of ConvertDecimalToRoman
 
void ClassRomanType:: ConvertRomanToDecimal()
{
	 int currentNumber = 0;	// Holds value of each letter numerical value
	 int previousNumber = 0; // Holds the numerical value being compared 
	 m_decimalValue=0; // Resets the current 'romanToDecimalValue' to zero
 
	 if(strcmp(m_romanValue,"Currently Undefined")!=0)
	 {
		 for (int counter = strlen(m_romanValue)-1; counter >= 0; counter--)
		 {
			 if ((m_romanValue[counter] == 'M') || (m_romanValue[counter] == 'm'))
			 {
				 currentNumber = 1000;
			 }
			 else if ((m_romanValue[counter] == 'D') || (m_romanValue[counter] == 'd'))
			 {
				 currentNumber = 500;
			 }
			 else if ((m_romanValue[counter] == 'C') || (m_romanValue[counter] == 'c'))
			 {
				 currentNumber = 100;
			 }
			 else if ((m_romanValue[counter] == 'L') || (m_romanValue[counter] == 'l'))
			 {
				 currentNumber = 50;
			 }
			 else if ((m_romanValue[counter] == 'X') || (m_romanValue[counter] == 'x'))
			 {
				 currentNumber = 10;
			 }
			 else if ((m_romanValue[counter] == 'V') || (m_romanValue[counter] == 'v'))
			 {
				 currentNumber = 5;
			 }  
			 else if ((m_romanValue[counter] == 'I') || (m_romanValue[counter] == 'i'))
			 {
				 currentNumber = 1;
			 }
			 else
			 {
				 currentNumber = 0;
			 }
			 //cout<<"previousNumber = " <<previousNumber<<endl;
			 //cout<<"currentNumber = " <<currentNumber<<endl;
 
			 if (previousNumber > currentNumber)
			 {
				 m_decimalValue -= currentNumber;
				 previousNumber = currentNumber;
			 }
			 else
			 {
				 m_decimalValue += currentNumber;
				 previousNumber = currentNumber;
			 }	
			 //cout<<"current m_decimalValue = " <<m_decimalValue<<endl<<endl;
		 }
	 }
}// end of ConvertRomanToDecimal
 
int ClassRomanType::ReturnDecimalNumber()
{
	return m_decimalValue;
}// end of ReturnDecimalNumber
 
string ClassRomanType::ReturnRomanNumber()
{
	return  m_romanValue;
}// end of ReturnRomanNumber
 
ClassRomanType::~ClassRomanType()
{
	m_decimalValue=0;
	strcpy(m_romanValue,"Currently Undefined");
}// http://programmingnotes.org/

QUICK NOTES:
The highlighted lines are sections of interest to look out for.

The code is heavily commented, so no further insight is necessary. If you have any questions, feel free to leave a comment below.

Once compiled, you should get this as your output

From the following menu:
1. Enter a Decimal number 2. Enter a Roman Numeral 3. Convert from Decimal to Roman 4. Convert from Roman to Decimal 5. Print the current Decimal number 6. Print the current Roman Numeral 7. Quit Please enter a selection: 9 You selected choice #9 which will: Error, you entered an invalid command! Please try again... -------------------------------------------------------------------- From the following menu: 1. Enter a Decimal number 2. Enter a Roman Numeral 3. Convert from Decimal to Roman 4. Convert from Roman to Decimal 5. Print the current Decimal number 6. Print the current Roman Numeral 7. Quit Please enter a selection: 5 You selected choice #5 which will: Print the current Decimal number The current Roman to Decimal Value is: 0 -------------------------------------------------------------------- From the following menu: 1. Enter a Decimal number 2. Enter a Roman Numeral 3. Convert from Decimal to Roman 4. Convert from Roman to Decimal 5. Print the current Decimal number 6. Print the current Roman Numeral 7. Quit Please enter a selection: 6 You selected choice #6 which will: Print the current Roman Numeral The current Decimal to Roman Value is: Currently Undefined -------------------------------------------------------------------- From the following menu: 1. Enter a Decimal number 2. Enter a Roman Numeral 3. Convert from Decimal to Roman 4. Convert from Roman to Decimal 5. Print the current Decimal number 6. Print the current Roman Numeral 7. Quit Please enter a selection: 1 You selected choice #1 which will: Get Decimal Number Enter a Decimal Number: 1987 -------------------------------------------------------------------- From the following menu: 1. Enter a Decimal number 2. Enter a Roman Numeral 3. Convert from Decimal to Roman 4. Convert from Roman to Decimal 5. Print the current Decimal number 6. Print the current Roman Numeral 7. Quit Please enter a selection: 5 You selected choice #5 which will: Print the current Decimal number The current Roman to Decimal Value is: 1987 -------------------------------------------------------------------- From the following menu: 1. Enter a Decimal number 2. Enter a Roman Numeral 3. Convert from Decimal to Roman 4. Convert from Roman to Decimal 5. Print the current Decimal number 6. Print the current Roman Numeral 7. Quit Please enter a selection: 3 You selected choice #3 which will: Convert from Decimal to Roman Running.... Complete! -------------------------------------------------------------------- From the following menu: 1. Enter a Decimal number 2. Enter a Roman Numeral 3. Convert from Decimal to Roman 4. Convert from Roman to Decimal 5. Print the current Decimal number 6. Print the current Roman Numeral 7. Quit Please enter a selection: 6 You selected choice #6 which will: Print the current Roman Numeral The current Decimal to Roman Value is: MCMLXXXVII -------------------------------------------------------------------- From the following menu: 1. Enter a Decimal number 2. Enter a Roman Numeral 3. Convert from Decimal to Roman 4. Convert from Roman to Decimal 5. Print the current Decimal number 6. Print the current Roman Numeral 7. Quit Please enter a selection: 2 You selected choice #2 which will: Get Roman Numeral Enter a Roman Numeral: mMxiI -------------------------------------------------------------------- From the following menu: 1. Enter a Decimal number 2. Enter a Roman Numeral 3. Convert from Decimal to Roman 4. Convert from Roman to Decimal 5. Print the current Decimal number 6. Print the current Roman Numeral 7. Quit Please enter a selection: 6 You selected choice #6 which will: Print the current Roman Numeral The current Decimal to Roman Value is: mMxiI -------------------------------------------------------------------- From the following menu: 1. Enter a Decimal number 2. Enter a Roman Numeral 3. Convert from Decimal to Roman 4. Convert from Roman to Decimal 5. Print the current Decimal number 6. Print the current Roman Numeral 7. Quit Please enter a selection: 4 You selected choice #4 which will: Convert from Roman to Decimal Running.... Complete! -------------------------------------------------------------------- From the following menu: 1. Enter a Decimal number 2. Enter a Roman Numeral 3. Convert from Decimal to Roman 4. Convert from Roman to Decimal 5. Print the current Decimal number 6. Print the current Roman Numeral 7. Quit Please enter a selection: 5 You selected choice #5 which will: Print the current Decimal number The current Roman to Decimal Value is: 2012 -------------------------------------------------------------------- From the following menu: 1. Enter a Decimal number 2. Enter a Roman Numeral 3. Convert from Decimal to Roman 4. Convert from Roman to Decimal 5. Print the current Decimal number 6. Print the current Roman Numeral 7. Quit Please enter a selection: 7
You selected choice #7 which will: Quit -------------------------------------------------------------------- Bye!

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Posted in: Advanced, C++ Tags: array, c++, class, do/while loop, for loop, functions, if/else, strcmp, strcpy, string, switch

C++ || Class – Roman Numeral To Integer & Integer To Roman Numeral Conversion

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