For loop in Rust - Mini Project: Build & Apply

Using a For Loop in Rust

📖 Scenario: You are helping a small shop owner who wants to list the prices of some fruits they sell. You will write a Rust program to show each fruit and its price.

🎯 Goal: Build a Rust program that uses a for loop to print each fruit and its price from a list.

📋 What You'll Learn

Create a vector called fruits with tuples of fruit names and prices

Create a variable called count to count the number of fruits

Use a for loop with variables name and price to iterate over fruits

Print each fruit name and price inside the loop

Print the total number of fruits after the loop

💡 Why This Matters

🌍 Real World

For loops are used to process lists of items like products, prices, or user data in many programs.

💼 Career

Understanding for loops is essential for software development jobs where you handle collections of data efficiently.

1

Create the fruit list

Create a vector called fruits with these exact tuples: ("Apple", 3), ("Banana", 2), ("Cherry", 5).

Rust

# Create a vector called fruits with tuples of fruit names and prices
# Your code here

Need a hint?

Use let fruits = vec![("Apple", 3), ("Banana", 2), ("Cherry", 5)]; to create the list.

2

Add a count variable

Add a variable called count and set it to 0 to count the fruits.

Rust

fn main() {
    let fruits = vec![("Apple", 3), ("Banana", 2), ("Cherry", 5)];
    // Create a variable count and set it to 0
    // Your code here
}

Need a hint?

Use let mut count = 0; to create a variable that can change.

3

Use a for loop to print fruits

Use a for loop with variables name and price to iterate over fruits.iter(). Inside the loop, print the fruit name and price using println!("{}: ${}", name, price); and increase count by 1.

Rust

fn main() {
    let fruits = vec![("Apple", 3), ("Banana", 2), ("Cherry", 5)];
    let mut count = 0;
    // Use a for loop to print each fruit and price, and increase count
    // Your code here
}

Need a hint?

Use for (name, price) in fruits.iter() to loop. Use count += 1; to add one each time.

4

Print the total count

After the loop, print the total number of fruits using println!("Total fruits: {}", count);.

Rust

fn main() {
    let fruits = vec![("Apple", 3), ("Banana", 2), ("Cherry", 5)];
    let mut count = 0;
    for (name, price) in fruits.iter() {
        println!("{}: ${}", name, price);
        count += 1;
    }
    // Print the total number of fruits
    // Your code here
}

Need a hint?

Use println!("Total fruits: {}", count); after the loop to show the count.