Learn functions

src/functions.rs

@@ -0,0 +1,29 @@
+fn main() {
+    println!("Hello, world!");
+    an_other_function(12);
+    print_value_with_unite(5, 'h');
+    statements();
+    println!("The value of five() is {}", five());
+}
+
+fn an_other_function(x: u32) {
+    println!("Another function");
+    println!("The value of x is: {}", x);
+}
+
+fn print_value_with_unite(value: i32, unit: char) {
+    println!("The value is: {}{}", value, unit);
+}
+
+fn statements() {
+    let y = {
+        let x = 3;
+        x + 1
+    };
+
+    println!("The value of y is: {}", y);
+}
+
+fn five() -> i32 {
+    5
+}