[此贴子已经被作者于2007-9-17 5:42:09编辑过]

#include <iostream>
#include <string>

using namespace std;

int arr1[]={1000,900,500,400,100,90,50,40,10,9,5,4,1};
string arr2[]={"M","CM","D","CD","C","XC","L","XL","X","IX","V","IV","I"};

string covert2Roman(int n)
{
string s;
int i=0;
while(n){
if(n>=arr1[i]){
n-=arr1[i];
s+=arr2[i];
}
else {
i++;
}
}
return s;
}

int main()
{
int n;
while(cin>>n){
cout<<covert2Roman(n)<<endl;
}
}