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/*******************************************************************************
Problem: Write a program that accepts a integer number greater than zero and less
than 400 as a three-digit Arabic (ordinary) numeral and outputs the
number written in Roman numerals.Important Roman numerals are: I for 1,
V for 5, X for 10, L for 50, C for 100. Recall that some numbers are
formed by using a kind of subtraction of one Roman digit; e.g.,
IV is 4 produced as V minus I, XL is 40, XC is 90 etc. Your program
should include a loop that lets the user repeat this calculation until
the user says she or he is done.

Course: C++
Tutor : Guillermo Julca
Mercy College

View Output

//---------------------------------------------------------------------------

#pragma argsused
int main(int argc, char* argv[])
{
int number,cent,dec,unid,r,i;
char ans;
do
{
do
{
cout<<"Enter number to evaluate : ";
cin>> number;
}while(number <= 0 || number >= 400);
cent = number / 100;
r = number % 100;
dec = r / 10;
unid = r % 10;
cout<<"The number written in Roman numerals is: ";
for( i=1; i<= cent ; i++)
cout<<"C";
switch(dec)
{
case 1:
cout<<"X";
break;
case 2:
cout<<"XX";
break;
case 3:
cout<<"XXX";
break;
//other way
/* case1:
case2:
case3:
for(i=1; i<=dec;i++)
cout<<"X";
break;
*/
case 4:
cout<<"XL";
break;
case 5:
cout<<"L";
break;
case 6:
cout<<"LX";
break;
case 7:
cout<<"LXX";
break;
case 8:
cout<<"LXXX";
break;
case 9: cout<<"XC";
break;
}
switch(unid)
{
case 1:
cout<<"I";
break;
case 2:
cout<<"II";
break;
case 3:
cout<<"III";
break;
case 4:
cout<<"IV";
break;
case 5:
cout<<"V";
break;
case 6:
cout<<"VI";
break;
case 7:
cout<<"VII";
break;
case 8:
cout<<"VIII";
break;
case 9:
cout<<"IX";
break;
}
cout<<endl;
cout<<endl;
cout<<"Do you want to continue(Y/N) ?: ";
cin>>ans;
}while(ans=='Y' || ans=='y');
getchar();

return 0;
}
//---------------------------------------------------------------------------

View Output

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