Array declaration in Go - Mini Project: Build & Apply

Array declaration

📖 Scenario: You are organizing a small event and want to keep track of the number of guests arriving each day over a week.

🎯 Goal: Create an array to store the number of guests for each day of the week.

📋 What You'll Learn

Create an array with exactly 7 integers representing guests per day

Use the array to store the exact values given

Print the array to show the guest counts

💡 Why This Matters

🌍 Real World

Arrays are useful to store fixed sets of related data, like daily counts or measurements.

💼 Career

Understanding arrays and loops is fundamental for programming tasks in any software development job.

1

Create an array with guest counts

Create an array called guests of type [7]int with these exact values: 12, 15, 10, 20, 18, 25, 30.

Go

# Create the array 'guests' with 7 integers for each day
# Your code here

Hint

Use the syntax varName := [size]type{values} to declare and initialize an array.

2

Add a variable for total guests

Create an integer variable called totalGuests and set it to 0.

Go

package main

import "fmt"

func main() {
    guests := [7]int{12, 15, 10, 20, 18, 25, 30}
    // Create 'totalGuests' and set to 0
    // Your code here
}

Hint

Use variableName := value to create and set a variable.

3

Calculate total guests using a loop

Use a for loop with the variable i from 0 to 6 to add each day's guests from guests[i] to totalGuests.

Go

package main

import "fmt"

func main() {
    guests := [7]int{12, 15, 10, 20, 18, 25, 30}
    totalGuests := 0
    // Add guests from each day to totalGuests using a for loop
    // Your code here
}

Hint

Use a for loop with index i to access array elements by guests[i].

4

Print the total number of guests

Write a fmt.Println statement to print the text Total guests: followed by the value of totalGuests.

Go

package main

import "fmt"

func main() {
    guests := [7]int{12, 15, 10, 20, 18, 25, 30}
    totalGuests := 0
    for i := 0; i < 7; i++ {
        totalGuests += guests[i]
    }
    // Print the total guests
    // Your code here
}

Hint

Use fmt.Println("Total guests:", totalGuests) to print the message and number.