To display the roman numeral of given number

#include<iostream>
using namespace std;
int main()
{
    int n;
    cout<<"Enter number to display equivalent roman numeral\n";
    cin>>n;
            for (;n>=1000;n-=1000)
                cout<<"M";
            for (;n>=900;n-=900)
                cout<<"CM";
            for (;n>=500;n-=500)
                cout<<"D";
            for (;n>=400;n-=400)
                cout<<"CD";
            for (;n>=100;n-=100)
                cout<<"C";
            for (;n>=90;n-=90)
                cout<<"XC";
            for (;n>=50;n-=50)
                 cout<<"L";
            for (;n>=40;n-=40)
                cout<<"XL";
            for (;n>=10;n-=10)
                cout<<"X";
            for (;n>=9;n-=9)
                cout<<"IX";
            for (;n>=5;n-=5)
                cout<<"V";
            for (;n>=4;n-=4)
                cout<<"IV";
            for (;n>=1;n-=1)
                cout<<"I";


    return 0;
}


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