#include #include #include //predefinitions of functions void breakTheNumber(int); int getOnes(int); int getTens(int); int getHundreds(int); int getThousends(int); int main() { std::cout << "Decimal to Roman number conventor. Enter a number up to 9,999 to convert.\n"; int userNumber{ 0 }; char answer{ 'n' }; do { std::cout << "\nEnter your number: \t"; std::cin >> userNumber; //send the number to function to break it to ones, tens, hundreds, thousends breakTheNumber(userNumber); std::cout << "\nWould you like to try another number? (y/n) \n"; std::cin >> answer; } while (answer == 'y'); return 0; } void breakTheNumber(int num) { //vectors of strings with roman numbers std::vector ones{ "", "I", "II", "III", "IV", "V", "VI", "VII", "VIII", "IX" }; std::vector tens {"", "X", "XX", "XXX", "XL", "L", "LX", "LXX", "LXXX", "XC"}; std::vector hundreds {"", "C", "CC", "CCC", "CD", "D", "DC", "DCC", "DCCC", "CM" }; std::vector thousends {"", "M", "MM", "MMM", "MMMM", "MMMMM", "MMMMMM", "MMMMMMMM", "MMMMMMMMM", "MMMMMMMMMM" }; //call functions to get tens, hundreds... int onesNum{ getOnes(num) }; int tensNum{ getTens(num) }; int hundredsNum{ getHundreds(num) }; int thousendsNum{ getThousends(num) }; std::cout << "Your number(" << num << ") is in Roman: " << thousends[thousendsNum]; std::cout << hundreds[hundredsNum] << tens[tensNum] << ones[onesNum] << std::endl; } int getOnes(int num) { return(num % 10); } int getTens(int num) { //check if num bigger than 10 if (num >= 10) { //need to divide by ten to get tens and get modulus of 10 to get only tens, not hundreds... int tens{ num / 10 }; return (tens % 10); } else return 0; } int getHundreds(int num) { if (num >= 100) { int hundreds{ num / 100 }; return (hundreds % 10); } else return 0; } int getThousends(int num) { if (num >= 1000) { int thousend{ num / 1000 }; return (thousend % 10); } else return 0; }

Decimal to Roman numbers convector