Chapter 5 Solutions Problem[D][c]

Question-Write a general-purpose function to convert any given year 
into its roman equivalent. The following table shows the 
roman equivalents of decimal numbers: 
Decimal  Roman             Decimal  Roman 
1               i                           100          c 
5              v                            500         d 
10            x                          1000       m 
50             l 
Example: 
Roman equivalent of 1988 is mdcccclxxxviii 
Roman equivalent of 1525 is mdxxv

Solution- Good question. honestly speaking, Even I used some help for this question.

#include<stdio.h>
int main()
{
int yr=1988;
printf("Enter any year\n");
scanf("%d",&yr);
yr=roman(yr,1000,109);
yr=roman(yr,500,100);
yr=roman(yr,100,99);
yr=roman(yr,50,108);
yr=roman(yr,10,120);
yr=roman(yr,5,118);
yr=roman(yr,1,105);
return 0;
}
roman(int yr, int n, int ch)
{
int a,i;
a=yr/n;
if(yr==9)
{
printf("ix");
return 0;
}
else if(yr==4)
{
printf("iv");
return 0;
}
else
{
for(i=1;i<=a;i++)
printf("%c",ch);
return(yr-a*n);
}
}