Decimal To Roman Numeral Converter Using Functions in Golang

Write a program that will ask the user to give a  decimal number and then the program will convert the given number into the roman numeral equivalent value.

Decimal    Roman
1              I
4             IV
5             V
9             IX
10                X
40             XL
50                L
90            XC
100            C
400            CD
500             D
900            CM
1000    M

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Sample Program Output

Program Listing

/* roman_numeral.go

Author   : Mr. Jake Rodriguez Pomperada, MAED-IT

Date     : July 31, 2019  Wednesday 1:28 PM

Location : Bacolod City, Negros Occidental

Website  : http://www.jakerpomperada.com

Emails   : jakerpomperada@gmail.com and jake_pomperada@tup.edu.ph

*/

package main

import (

"fmt"

)

func DecimalToRoman(num int) string {

values := []int{

1000, 900, 500, 400,

100, 90, 50, 40,

10, 9, 5, 4, 1,

}

symbols := []string{

"M", "CM", "D", "CD",

"C", "XC", "L", "XL",

"X", "IX", "V", "IV",

"I"}

roman := ""

i := 0

for num > 0 {

k := num / values[i]

for j := 0; j < k; j++ {

roman += symbols[i]

num -= values[i]

}

i++

}

return roman

}

func main() {

var val_num int

fmt.Print("\n")

fmt.Print("\tDecimal To Roman Numeral Converter Using Functions")

fmt.Print("\n\n")

fmt.Print("\tGive a Number     : ")

fmt.Scanf("%d",&val_num)

result := DecimalToRoman(val_num)

fmt.Print("\n")

fmt.Printf("\tThe roman numeral value of %d is %s.",val_num,result)

fmt.Print("\n\n")

fmt.Print("\tEnd of Program")

fmt.Print("\n")

}