Recap - Basic Score Tracker

Part of the Logic & Flow section of Coddy's Rust journey — lesson 14 of 66.

Challenge

Easy

You will receive two inputs: first, a comma-separated list of test scores, and second, a score to add. Create a vector from the initial scores, add the new score, calculate the average of all scores, and print the results.

Requirements:

Read the first input containing comma-separated scores (e.g., 85,92,78)
Split the string by commas and trim each individual token before converting to an integer (e.g., use .trim() on each element after splitting)
Create a mutable vector from these scores
Read the second input and convert it to an integer (trim it first)
Use .push() to add the new score to the vector
Calculate the average of all scores in the vector
Print the total number of scores
Print the average score (as an integer)

Input:

First line: Comma-separated integers representing initial scores (e.g., 85,92,78)
Second line: An integer representing the new score to add

Output:

First line: The total number of scores
Second line: The average score (as an integer, truncated)

Note: Always call .trim() on the entire input line and on each individual score token after splitting by comma. Input strings may contain invisible whitespace or newline characters that will cause a panic when parsing if not removed.

Try it yourself

use std::io;

fn main() {
    // Read the comma-separated scores
    let mut scores_input = String::new();
    io::stdin().read_line(&mut scores_input).expect("Failed to read line");
    
    // Read the new score to add
    let mut new_score_input = String::new();
    io::stdin().read_line(&mut new_score_input).expect("Failed to read line");
    
    // TODO: Write your code below
    // 1. Split scores_input by commas and convert to integers
    // 2. Create a mutable vector from these scores
    // 3. Convert new_score_input to an integer
    // 4. Push the new score to the vector
    // 5. Calculate the average of all scores
    
    // Print the total number of scores
    // println!("{}", total_scores);
    
    // Print the average score
    // println!("{}", average);
}