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functions/src/main.rs

@@ -1,8 +1,11 @@
 fn main() {
-    let x = plus_one(5);
+    print_labeled_measurement(37, 'h');
+}
 
+fn another_function(x: i32) {
     println!("The value of x is: {x}");
 }
-fn plus_one(x: i32) -> i32 {
+
-    x + 1
+fn print_labeled_measurement(value: i32, unit_label: char) {
+    println!("The measurement is: {value}{unit_label}");
 }

old_functions/Cargo.lock

@@ -0,0 +1,7 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "functions"
+version = "0.1.0"

old_functions/Cargo.toml

@@ -0,0 +1,8 @@
+[package]
+name = "functions"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]

old_functions/src/main.rs

@@ -0,0 +1,8 @@
+fn main() {
+    let x = plus_one(5);
+
+    println!("The value of x is: {x}");
+}
+fn plus_one(x: i32) -> i32 {
+    x + 1
+}

old_variables/Cargo.lock

@@ -0,0 +1,7 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "variables"
+version = "0.1.0"

old_variables/Cargo.toml

@@ -0,0 +1,8 @@
+[package]
+name = "variables"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]

old_variables/src/main.rs

@@ -0,0 +1,27 @@
+use std::io;
+
+fn main() {
+    let a = [1, 2, 3, 4, 5];
+
+    println!("Please enter an array index.");
+
+    let mut index = String::new();
+
+    io::stdin()
+        .read_line(&mut index)
+        .expect("Failed to read line");
+
+    let index: usize = match {index.trim().parse()} {
+        Ok(x) => x,
+        Err(_) => {println!("expected an index, got \"{:}\". assuming 0", index.trim()); 0},
+    };
+
+    println!("got value {index}");
+
+    let element = a[index];
+
+    /* this is a 
+     * multiline
+     * comment */
+    println!("The value of the element at index {index} is: {element}");
+}

variables/src/main.rs

@@ -1,27 +1,11 @@
-use std::io;
-
 fn main() {
-    let a = [1, 2, 3, 4, 5];
+    let x = 5;
+    let x = x + 1;
 
-    println!("Please enter an array index.");
+    {
+        let x=x*2;
+        println!("The value of x in the inner scope is: {x}");
+    }
 
-    let mut index = String::new();
+    println!("The value of x is: {x}");
-
-    io::stdin()
-        .read_line(&mut index)
-        .expect("Failed to read line");
-
-    let index: usize = match {index.trim().parse()} {
-        Ok(x) => x,
-        Err(_) => {println!("expected an index, got \"{:}\". assuming 0", index.trim()); 0},
-    };
-
-    println!("got value {index}");
-
-    let element = a[index];
-
-    /* this is a 
-     * multiline
-     * comment */
-    println!("The value of the element at index {index} is: {element}");
 }