/// Function to add two numbers and return the result //START_KEY // remove this line fn add_numbers(a: i32, b: i32) -> i32 { a + b } //END_KEY // Function to greet a person by name //START_KEY fn greet_person(name: &str) { println!("Hello, {}! Welcome to the Rust example.", name); } //END_KEY // Main function where the program execution begins //START_KEY fn main() { // Call the add_numbers function let result = add_numbers(5, 7); println!("Result of adding numbers: {}", result); // Call the greet_person function greet_person("Alice"); } //END_KEY