Increment and decrement in Go - Mini Project: Build & Apply

Increment and Decrement in Go

📖 Scenario: Imagine you are managing a small store's inventory. You want to keep track of the number of apples you have. Sometimes you sell an apple, so the count goes down. Sometimes you get new apples delivered, so the count goes up.

🎯 Goal: You will create a program that starts with a certain number of apples, then increases and decreases the count using increment and decrement operations.

📋 What You'll Learn

Create a variable to hold the number of apples

Create a variable to hold the number of apples delivered

Use increment and decrement operators to update the apple count

Print the final number of apples

💡 Why This Matters

🌍 Real World

Keeping track of inventory counts in stores or warehouses often requires adding and subtracting items.

💼 Career

Understanding how to update values with increments and decrements is a basic skill for programming tasks like counters, loops, and managing quantities.

1

Create the initial apple count

Create a variable called apples of type int and set it to 10.

Go

# Create a variable called apples of type int and set it to 10
// Your code here

Need a hint?

Use apples := 10 to create and set the variable.

2

Add the number of apples delivered

Create a variable called delivery of type int and set it to 5.

Go

package main

import "fmt"

func main() {
    apples := 10
    // Create a variable called delivery of type int and set it to 5
    // Your code here
}

Need a hint?

Use delivery := 5 to create and set the variable.

3

Update the apple count using increment and decrement

Increase apples by delivery using the += operator. Then decrease apples by 3 using the -= operator.

Go

package main

import "fmt"

func main() {
    apples := 10
    delivery := 5
    // Increase apples by delivery
    // Decrease apples by 3
    // Your code here
}

Need a hint?

Use apples += delivery to add and apples -= 3 to subtract.

4

Print the final number of apples

Use fmt.Println to print the value of apples.

Go

package main

import "fmt"

func main() {
    apples := 10
    delivery := 5
    apples += delivery
    apples -= 3
    // Print the final number of apples
    // Your code here
}

Need a hint?

Use fmt.Println(apples) to show the final count.