Else–if ladder in Go - Mini Project: Build & Apply

Else-if ladder

📖 Scenario: You are building a simple program to categorize a person's age group based on their age. This is like sorting people into groups such as child, teenager, adult, or senior.

🎯 Goal: Create a Go program that uses an else-if ladder to check a person's age and print the correct age group.

📋 What You'll Learn

Create an integer variable called age with the value 25

Create a string variable called ageGroup to store the age category

Use an else-if ladder with if, else if, and else to assign the correct age group to ageGroup

Print the value of ageGroup

💡 Why This Matters

🌍 Real World

Age group categorization is common in apps that provide age-specific content or services, like games, health apps, or social platforms.

💼 Career

Understanding else-if ladders helps in decision-making logic, which is essential for software development, data processing, and user input validation.

1

DATA SETUP: Create the age variable

Create an integer variable called age and set it to 25.

Go

var age int = 25
// Your code here

Need a hint?

Use var age int = 25 to create the variable.

2

CONFIGURATION: Create the ageGroup variable

Create a string variable called ageGroup and set it to an empty string "".

Go

package main

import "fmt"

func main() {
    var age int = 25
    var ageGroup string = ""
    // Your code here
}

Need a hint?

Use var ageGroup string = "" to create the variable.

3

CORE LOGIC: Use an else-if ladder to assign ageGroup

Use an else-if ladder with if, else if, and else to assign ageGroup as follows: if age < 13, set ageGroup = "Child"; else if age < 20, set ageGroup = "Teenager"; else if age < 60, set ageGroup = "Adult"; else set ageGroup = "Senior".

Go

package main

import "fmt"

func main() {
    var age int = 25
    var ageGroup string = ""

    // Your code here
}

Need a hint?

Use if, else if, and else blocks to check the age ranges and assign ageGroup.

4

OUTPUT: Print the ageGroup

Write a fmt.Println statement to print the value of ageGroup.

Go

package main

import "fmt"

func main() {
    var age int = 25
    var ageGroup string = ""

    if age < 13 {
        ageGroup = "Child"
    } else if age < 20 {
        ageGroup = "Teenager"
    } else if age < 60 {
        ageGroup = "Adult"
    } else {
        ageGroup = "Senior"
    }

    // Your code here
}

Need a hint?

Use fmt.Println(ageGroup) to print the age group.