vectors

vectors/Cargo.toml

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+[package]
+name = "vectors"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]

vectors/src/main.rs

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+use std::io;
+
+fn main() {
+    let mut friends: Vec<String> = Vec::new();
+
+    friends = init_list();
+    println!("you're friends with {:?}", friends);
+    println!("1. update\n2. quit");
+
+    let mut choice = String::new();
+
+    io::stdin()
+        .read_line(&mut choice)
+        .expect("failed to read line!");
+
+    let choice: u32 = match choice.trim().parse() {
+        Ok(num) => num,
+        Err(_) => {
+            todo!();
+        }
+    };
+
+    if choice == 1 {
+        update_list(&mut friends);
+        println!("updated friends list {:?}", friends);
+    } else {
+        return;
+    }
+}
+
+fn update_list(friends: &mut Vec<String>) {
+    println!("\t...your friends as of now are: {:?}", friends);
+    println!("...which one would you like to update?");
+
+    let mut index = String::new();
+
+    io::stdin()
+        .read_line(&mut index)
+        .expect("failed to read line!");
+
+    let index: usize = match index.trim().parse() {
+        Ok(num) => num,
+        Err(_) => {
+            todo!();
+        }
+    };
+
+    println!("...and you would like to replace them with: ");
+    let mut to_update_with = String::new();
+
+    io::stdin()
+        .read_line(&mut to_update_with)
+        .expect("failed to read line!");
+
+    friends[index - 1] = to_update_with;
+}
+
+fn init_list() -> Vec<String> {
+    println!("how many friends do you have?");
+
+    let mut friend_count = String::new();
+
+    io::stdin()
+        .read_line(&mut friend_count)
+        .expect("failed to read line!");
+
+    let friend_count: u32 = match friend_count.trim().parse() {
+        Ok(num) => num,
+        Err(_) => {
+            todo!();
+        }
+    };
+
+    let mut names = Vec::new();
+
+    for i in 0..friend_count {
+        println!("\tenter name of friend {}", i + 1);
+
+        let mut name = String::new();
+        io::stdin()
+            .read_line(&mut name)
+            .expect("failed to read line!");
+
+        names.push(name);
+    }
+
+    names
+}