fn main() {
      let a = 1;
    let b = 2;
let   sum=
    a+    b;

      println!(
"{a} + {b} = {sum}");
           }

fn main() {
    let a = 1;
    let b = 2;
    let sum = a + b;

    println!("{a} + {b} = {sum}");
}