#include <stdio.h>
void main()
{

//declaring function variables
char RomanNumeral[20]; //this is the array of 20 charactors
int locationcounter; //the counter that goes through the loacations in the array
int Arabicvalue; //this is the converted arabic value


//body of function
printf("Enter Roman Numeral \n");//asks user to enter a roman numeral
scanf("%s", &RomanNumeral[0]); // reads the string and stores it into the array
printf("\n\n %s", RomanNumeral);




for (locationcounter=0; locationcounter <19; locationcounter++)//this loop looks at each location in the array

{
if (RomanNumeral[locationcounter]=='I')
    Arabicvalue +=1;

else if (RomanNumeral[locationcounter]=='V')
{
if (RomanNumeral[locationcounter-1]=='I')
    Arabicvalue +=3;
else
    Arabicvalue +=5;

}



else if (RomanNumeral[locationcounter]=='X')
{
    if (RomanNumeral[locationcounter-1]=='I')
    Arabicvalue +=8;

else if (RomanNumeral[locationcounter]=='V')
    Arabicvalue +=0;

else
    Arabicvalue +=10;
}



else if (RomanNumeral[locationcounter]=='L')
{
if (RomanNumeral[locationcounter-1]=='I')
    Arabicvalue +=48;

else if (RomanNumeral[locationcounter]=='V')
    Arabicvalue +=40;

else if (RomanNumeral[locationcounter]=='X')
    Arabicvalue +=30;

else
    Arabicvalue +=50;
}



else if (RomanNumeral[locationcounter]=='C')
{
if (RomanNumeral[locationcounter-1]=='I')
    Arabicvalue +=98;

else if (RomanNumeral[locationcounter]=='V')
    Arabicvalue +=90;

else if (RomanNumeral[locationcounter]=='X')
    Arabicvalue +=80;

else if (RomanNumeral[locationcounter]=='L')
    Arabicvalue +=0;

else
    Arabicvalue +=100;
}




else if (RomanNumeral[locationcounter]=='D')
{
if (RomanNumeral[locationcounter-1]=='I')
    Arabicvalue +=498;

else if (RomanNumeral[locationcounter]=='V')
    Arabicvalue +=490;

else if (RomanNumeral[locationcounter]=='X')
    Arabicvalue +=480;

else if (RomanNumeral[locationcounter]=='L')
    Arabicvalue +=400;

else if (RomanNumeral[locationcounter]=='C')
    Arabicvalue +=300;

else
    Arabicvalue +=500;
}


else if (RomanNumeral[locationcounter]=='M')
{
if (RomanNumeral[locationcounter-1]=='I')
    Arabicvalue +=998;

else if (RomanNumeral[locationcounter]=='V')
    Arabicvalue +=990;

else if (RomanNumeral[locationcounter]=='X')
    Arabicvalue +=980;

else if (RomanNumeral[locationcounter]=='L')
    Arabicvalue +=900;

else if (RomanNumeral[locationcounter]=='C')
    Arabicvalue +=800;

else if (RomanNumeral[locationcounter]=='D')
    Arabicvalue +=0;

else
    Arabicvalue +=1000;
}
}

printf("\n%d", Arabicvalue);

}

char RomanNumeral[20]; //this is the array of 20 charactors
                                     // True, this creates an array of 20 characters.

//body of function
printf("Enter Roman Numeral \n");//asks user to enter a roman numeral
scanf("%s", &RomanNumeral[0]); // reads the string and stores it into the array
                                                 // no.