Break statement in Go - Mini Project: Build & Apply

Using the Break Statement in Go

📖 Scenario: Imagine you are checking a list of daily temperatures to find the first day when the temperature reaches or exceeds a certain limit. Once you find that day, you want to stop checking further days.

🎯 Goal: You will write a Go program that uses a break statement inside a for loop to stop the loop when the temperature limit is reached.

📋 What You'll Learn

Create a slice of integers called temperatures with the exact values: 23, 25, 28, 30, 32, 29, 27

Create an integer variable called limit and set it to 30

Use a for loop with the variable temp to iterate over temperatures

Inside the loop, use an if statement to check if temp is greater than or equal to limit

Use the break statement to exit the loop when the condition is true

Print the message "Temperature limit reached: X" where X is the temperature that caused the break

💡 Why This Matters

🌍 Real World

Checking sensor data or daily measurements often requires stopping early when a threshold is reached to save time and resources.

💼 Career

Understanding how to control loops with break statements is important for writing efficient programs in many software development and data processing jobs.

1

Create the temperature data

Create a slice of integers called temperatures with these exact values: 23, 25, 28, 30, 32, 29, 27

Go

# Your code here

Need a hint?

Use temperatures := []int{...} to create the slice with the exact numbers.

2

Set the temperature limit

Create an integer variable called limit and set it to 30

Go

package main

func main() {
    temperatures := []int{23, 25, 28, 30, 32, 29, 27}
    // Your code here
}

Need a hint?

Use limit := 30 to create the variable.

3

Use a for loop with break

Use a for loop with the variable temp to iterate over temperatures. Inside the loop, use an if statement to check if temp is greater than or equal to limit. Use the break statement to exit the loop when the condition is true.

Go

package main

func main() {
    temperatures := []int{23, 25, 28, 30, 32, 29, 27}
    limit := 30
    // Your code here
}

Need a hint?

Use for _, temp := range temperatures to loop. Inside, check if temp >= limit and then break.

4

Print the temperature that caused the break

Print the message "Temperature limit reached: X" where X is the temperature that caused the break. Use fmt.Println to display the message.

Go

package main

import "fmt"

func main() {
    temperatures := []int{23, 25, 28, 30, 32, 29, 27}
    limit := 30

    for _, temp := range temperatures {
        if temp >= limit {
            // Your code here
        }
    }
}

Need a hint?

Use fmt.Println("Temperature limit reached:", temp) before the break.