Find Age From Date of Birth in Golang

package main

import (
    "fmt"
    "strconv"
    "time"
)

func findAge(birthday string) int {

    dateFormat := "02/01/2006"

    dob, err := time.Parse(dateFormat, birthday)

    if err != nil {
        panic(err)
    }

    var age int

    age = time.Now().Year() - dob.Year()

    month, _ := strconv.Atoi(strconv.Itoa(dob.Day()) + strconv.Itoa(int(dob.Month())))

    day, _ := strconv.Atoi(strconv.Itoa(time.Now().Day()) + strconv.Itoa(int(time.Now().Month())))

    if month > day {
        age -= 1
    }

    return age
}

func main() {
    dob := "16/05/2001"
    age := findAge(dob)
    fmt.Println("age:", age)
}       
        

Output

age: 21