Answer:
// Program is written in C++ programming language
/ Comments are used for explanatory purpose
// Program starts here
#include<bits/stdc++.h>
using namespace std;
//Declare a function named value to represent the symbols of Roman Numerals
int value(char xy)
{
if (xy == 'I') { return 1; }
if (xy == 'V') { return 5; }
if (xy == 'X') { return 10; }
if (xy == 'L') { return 50; }
if (xy == 'C') { return 100; }
if (xy == 'D') { return 500; }
if (xy == 'M') { return 1000; }
return -1;
}
// Convert to numbers , taking Variable named input as input
int Converted(string &input)
{
// Declare a variable to store the calculated output
int calc;
// Set to 0
calc = 0;
// Iterate through input from 0 to the last character
for (int i=0; i<input.length(); i++)
{
int check1 = value(input[i]);
if (i+1 < input.length())
{
int check12= value(input[i+1]);
// Comparing both values
if (check1>= check2)
{
calc+ =check1;
}
else
{
calc+ =check2 - check1;
i++;
}
}
else
{
calc+ =check1;
}
}
return calc;
}
// Main method starts here
int main()
{
// String input declaration
string inp;
cout<"Enter any valid Roman numeral";
cout << "Result is "
<< Converted(inp);
return 0;
}
