C++ Classes, implementation, ADT

zatora · #1 04-May-2008, 01:28

hi, all
i am new to the thread posting, i am designing a project to convert roman to decimal but i don't know hoe to code the class for that cuz i don't get the class the implementation when we have to use it also the constarctor destractor and ADT it is all blurry if some will give me an example of a class with comments that would be great also i wish if some look at the function that designed to stor the roman string into a array of char then do the conversion to decimal.

CPP / C++ / C Code:

void get_Roman(string input,char[] roman,int& len)
{
int len;
cin<<input;
len=input.length();
char[len] =input;
// i am not sure how to assign a string to an array of type char

}
void convert_roman(int& len,char[] roman,int& sum )
{
int value;int i;int value[len];
for (i=len-1;i>=1;i--)
{
switch( roman[i])
case 'M'
value[i]=1000;
case 'D'
value[i]=500;
case 'C'
value[i]=100;
case 'L'
value[i]=50;
case 'X'
value[i]=10;
case 'V'
value[i]=5;
case 'I'
value[i]=1;
if (value[len-1]>=value[len])
	sum =value[i]+value[i-1]; 
else
	sum=value[i]-value[i-1];

}

Peter_APIIT · #2 06-May-2008, 04:49

Can you provide a input and output example ?

I not understand what is roman.

You just need a class with string that contain roman and has constructor and destructor.

I hope this help.

zatora · #3 06-May-2008, 04:53

roman characters are :XI XV that is what roman's use to use for numbers example I=1 ,II=2,III=3,Iv=4,v+5...

zatora · #4 06-May-2008, 04:57

also my apologies to the ones who checked my code it wrong i admit it i have the that can convert but i am building the class RomanNumbers i will post them soon i have to submitt my project to day

zatora · #5 06-May-2008, 05:00

CPP / C++ / C Code:

#include<iostream>
#include<string>
using namespace std;
 
int main()
{
    string str;
    cin>>str;
    int j = str.length();
    int val,val1,sum;
    val1=0;val=0;sum=0;
    for(int i=str.length()-1;i>=0;i--)
    {val1=val;
        switch(str[i])
        {
        case 'i':
            val=1;
            break;
        case 'v':
            val=5;
            break;
        case 'x':
            val=10;
            break;
        case 'l':
            val=50;
            break;
        case'c':
            val=100;
            break;
        case'd':
            val=500;
            break;
        case'm':
            val=1000;
            break;
        default:
            val=0;
        }
        if (val1<=val)
            sum=sum+val;
        else
        sum=sum-val;
 
        cout<<"val: "<<val<<" val 1: "<<val1<<" sum : "<<sum<<endl;
}
}

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C++ Classes, implementation, ADT

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