Loop execution flow in Go - Mini Project: Build & Apply

Loop Execution Flow in Go

📖 Scenario: You are helping a small shop owner who wants to count how many items they have in stock. They have a list of item quantities and want to add them up.

🎯 Goal: Build a Go program that uses a for loop to add up all the item quantities and print the total.

📋 What You'll Learn

Create a slice named items with the exact quantities: 3, 7, 2, 9, 4

Create an integer variable named total and set it to 0

Use a for loop with the variable quantity to go through each number in items

Add each quantity to total inside the loop

Print the final value of total

💡 Why This Matters

🌍 Real World

Counting totals is common in shops, inventories, and anywhere you track quantities.

💼 Career

Understanding loop execution flow is essential for processing lists of data in software development.

1

Create the item quantities slice

Create a slice called items with these exact integer values: 3, 7, 2, 9, 4

Go

# Create the items slice with the exact values
# Your code here

Need a hint?

Use items := []int{3, 7, 2, 9, 4} to create the slice.

2

Create the total variable

Create an integer variable called total and set it to 0 inside the main function, below the items slice

Go

package main

func main() {
    items := []int{3, 7, 2, 9, 4}
    // Create total variable and set to 0
    // Your code here
}

Need a hint?

Use total := 0 to create the variable.

3

Add a for loop to sum the items

Use a for loop with the variable quantity to iterate over items and add each quantity to total

Go

package main

func main() {
    items := []int{3, 7, 2, 9, 4}
    total := 0
    // Use a for loop with quantity to add each item to total
    // Your code here
}

Need a hint?

Use for _, quantity := range items and inside the loop add quantity to total.

4

Print the total

Print the value of total using fmt.Println(total). Remember to import the fmt package at the top.

Go

package main

import "fmt"

func main() {
    items := []int{3, 7, 2, 9, 4}
    total := 0
    for _, quantity := range items {
        total += quantity
    }
    // Print the total
    // Your code here
}

Need a hint?

Use fmt.Println(total) to print the total sum.