Write a C program to convert a Roman numeral to its decimal equivalent.

Write a C program to convert a Roman numeral to its decimal equivalent.

Program Code:

#include<stdio.h>

#include<string.h>

void main()

{

char a[10];

int total[10],sum=0,i,l;

printf("\n enter a roman number: ");

gets(a);

l=strlen(a);

for(i=0;i<l;i++)

{

switch(a[i])

{

case 'M':total[i]=1000;

break;

case 'D':total[i]=500;

break;

case 'C':total[i]=100;

break;

case 'L':total[i]=50;

break;

case 'X':total[i]=10;

break;

case 'I':total[i]=1;

break;

}

sum=sum+total[i];

}

for(i=0;i<l-1;i++)

{

if(total[i]<total[i+1])

{

sum=sum-2*total[i];

}

printf("\n the decimal equivalent is %d",sum);

}

}