Coding Question 29

#include<stdio.h>

int main()
{

int n,nth,nh,nt,n_one;
printf("\n Enter a number: ");
scanf("%d",&n);

if(n>0 || n<=9999)
{

nth = n/1000;

switch(nth)
{
case 1: printf("M"); break;
case 2: printf("MM"); break;
case 3: printf("MMM"); break;
case 4: printf("MMMM"); break;
case 5: printf("L"); break;
case 6: printf("LM"); break;
case 7: printf("LMM"); break;
case 8: printf("LMMM"); break;
case 9: printf("LMMMM"); break;

}

nh = (n%1000)/100;

switch(nh)
{
case 1: printf("C"); break;
case 2: printf("CC"); break;
case 3: printf("CCC"); break;
case 4: printf("CD"); break;
case 5: printf("D"); break;
case 6: printf("DC"); break;
case 7: printf("DCC"); break;
case 8: printf("DCCC"); break;
case 9: printf("CM"); break;

}

nt = ((n%1000)%100)/10;

switch(nt)
{
case 1: printf("X"); break;
case 2: printf("XX"); break;
case 3: printf("XXX"); break;
case 4: printf("XL"); break;
case 5: printf("L"); break;
case 6: printf("LX"); break;
case 7: printf("LXX"); break;
case 8: printf("LXXX"); break;
case 9: printf("XC"); break;

}
n_one = ((n%1000)%100)%10;

switch(n_one)
{
case 1: printf("I"); break;
case 2: printf("II"); break;
case 3: printf("III"); break;
case 4: printf("IV"); break;
case 5: printf("V"); break;
case 6: printf("VI"); break;
case 7: printf("VII"); break;
case 8: printf("VIII"); break;
case 9: printf("IX"); break;

}

}
else
{
printf("\n Invalid No.");
}

return 0;
}